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A205744
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The sequence "u_{n-r}" used by Conway and Guy in the construction of A005318 and A096858.
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5
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0, 0, 1, 1, 2, 4, 4, 7, 13, 24, 24, 44, 84, 161, 309, 309, 594, 1164, 2284, 4484, 8807, 8807, 17305, 34301, 68008, 134852, 267420, 530356, 530356, 1051905, 2095003, 4172701, 8311101, 16554194, 32973536, 65679652, 65679652, 130828948, 261127540, 521203175, 1040311347, 2076449993
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OFFSET
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1,5
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COMMENTS
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This is A005318 with the terms A005318(i) repeated iff i is a triangular number.
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LINKS
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Table of n, a(n) for n=1..42.
R. K. Guy, Sets of integers whose subsets have distinct sums, pp. 141-154 of Theory and practice of combinatorics. Ed. A. Rosa, G. Sabidussi and J. Turgeon. Annals of Discrete Mathematics, 12. North-Holland 1982. See Table 1, column (3).
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FORMULA
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A005318(n+1) = 2*A005318(n)-A205744(n), A205744(n) = A005318(A083920(n)), A083920(n) = n - A002024(n). - N. J. A. Sloane, Feb 11 2012
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CROSSREFS
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Cf. A005318, A096858.
Sequence in context: A226870 A227751 A268995 * A237859 A240338 A227103
Adjacent sequences: A205741 A205742 A205743 * A205745 A205746 A205747
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane, Feb 09 2012
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STATUS
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approved
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