A206239 Subsequence A005318(t_n), where t_n is the n-th triangular number (A000217).

0, 1, 4, 24, 309, 8807, 530356, 65679652, 16512273616, 8370804628178, 8525389679187197, 17408681737224080093, 71192609533782031405771, 582711051458083440858730497, 9542765396943645975520145941300, 312620974584432225019935558843189172, 20485270547000003746699189223065768145956

Offset: 1

Author

N. J. A. Sloane, Feb 09 2012

Keywords

• nonn

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

Cf. A005318, A205744, A096858.