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A206239 Subsequence A005318(t_n), where t_n is the n-th triangular number (A000217). 1
0, 1, 4, 24, 309, 8807, 530356, 65679652, 16512273616, 8370804628178, 8525389679187197, 17408681737224080093, 71192609533782031405771, 582711051458083440858730497, 9542765396943645975520145941300, 312620974584432225019935558843189172, 20485270547000003746699189223065768145956 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
These are the repeated terms in A205744.
LINKS
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.
CROSSREFS
Sequence in context: A052727 A219118 A005756 * A361054 A196687 A185457
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Feb 09 2012
STATUS
approved

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Last modified March 28 15:28 EDT 2024. Contains 371254 sequences. (Running on oeis4.)