|
| |
|
|
A124692
|
|
Position of substring A032740(n) within the decimal expansion of 2^A032740(n).
|
|
1
|
|
|
|
1, 1, 3, 10, 2, 10, 5, 3, 11, 13, 2, 5, 20, 4, 3, 24, 19, 5, 17, 19, 35, 25, 53, 67, 60, 61, 33, 74, 18, 109, 17, 30, 117, 96, 66, 14, 57, 62, 97, 80, 25, 81, 38, 112, 143, 152, 2, 92, 122, 113, 129, 93, 20, 159, 138, 187, 26, 57, 35, 105, 158, 9, 50, 58, 198, 185, 182, 42, 17
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,3
|
|
|
COMMENTS
|
A032740 includes numbers n that are a substring of 2^n.
|
|
|
LINKS
|
David W. Wilson, Table of n, a(n) for n = 1..10000
|
|
|
EXAMPLE
|
A032740(1) = 6 is a substring of 64 = 2^6 starting at position 1, so a(1) = 1.
A032740(2) = 10 is a substring of 1024 = 2^10 starting at position 1, so a(2) = 1.
A032740(3) = 36 is a substring of 68719476736 = 2^36 starting at position 10, so a(3) = 10.
|
|
|
CROSSREFS
|
Sequence in context: A016450 A179397 A111272 * A091043 A321118 A167790
Adjacent sequences: A124689 A124690 A124691 * A124693 A124694 A124695
|
|
|
KEYWORD
|
base,easy,nonn
|
|
|
AUTHOR
|
Cino Hilliard, Dec 25 2006, corrected Jun 26 2007
|
|
|
EXTENSIONS
|
Edited by N. J. A. Sloane at the suggestion of Andrew S. Plewe, Jun 23 2007
|
|
|
STATUS
|
approved
|
| |
|
|
