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A092425
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Decimal expansion of Pi^4.
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22
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9, 7, 4, 0, 9, 0, 9, 1, 0, 3, 4, 0, 0, 2, 4, 3, 7, 2, 3, 6, 4, 4, 0, 3, 3, 2, 6, 8, 8, 7, 0, 5, 1, 1, 1, 2, 4, 9, 7, 2, 7, 5, 8, 5, 6, 7, 2, 6, 8, 5, 4, 2, 1, 6, 9, 1, 4, 6, 7, 8, 5, 9, 3, 8, 9, 9, 7, 0, 8, 5, 5, 4, 5, 6, 8, 2, 7, 1, 9, 6, 1, 9, 0, 1, 2, 1, 8, 6, 7, 2, 3, 4, 7, 5, 2, 9, 9, 2, 5, 5
(list;
constant;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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2,1
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LINKS
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Harry J. Smith, Table of n, a(n) for n = 2..20000
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FORMULA
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Pi^4 = 120 * Sum(j>=1, Sum(i=1..j-1, 1/(i*j)^2)). - Enrique Pérez Herrero, Jun 29 2012
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EXAMPLE
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97.40909103400243723644033268870511124972758567268542169146785938997085...
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MATHEMATICA
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RealDigits[Pi^4, 10, 100][[1]] (* G. C. Greubel, Mar 09 2018 *)
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PROG
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(PARI) { default(realprecision, 20080); x=Pi^4/10; for (n=2, 20000, d=floor(x); x=(x-d)*10; write("b092425.txt", n, " ", d)); } \\ Harry J. Smith, Jun 22 2009
(MAGMA) R:= RealField(150); (Pi(R))^4; // G. C. Greubel, Mar 09 2018
(MAGMA) R:=RealField(110); SetDefaultRealField(R); n:=Pi(R)^4; Reverse(Intseq(Floor(10^98*n))); // Bruno Berselli, Mar 12 2018
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CROSSREFS
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Cf. A000796 (Pi), A002388 (Pi^2), A091925 (Pi^3), A092731 (Pi^5), A092732 (Pi^6), A092735 (Pi^7), A092736 (Pi^8), A058286 (continued fraction).
Sequence in context: A105532 A111471 A078527 * A019647 A318437 A011115
Adjacent sequences: A092422 A092423 A092424 * A092426 A092427 A092428
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KEYWORD
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cons,easy,nonn
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AUTHOR
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Mohammad K. Azarian, Mar 22 2004
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STATUS
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approved
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