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A206239
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Subsequence A005318(t_n), where t_n is the n-th triangular number (A000217).
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1
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0, 1, 4, 24, 309, 8807, 530356, 65679652, 16512273616, 8370804628178, 8525389679187197, 17408681737224080093, 71192609533782031405771, 582711051458083440858730497, 9542765396943645975520145941300, 312620974584432225019935558843189172, 20485270547000003746699189223065768145956
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OFFSET
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1,3
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COMMENTS
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These are the repeated terms in A205744.
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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