Indices k such that 3 plus the k-th triangular number is a perfect square.
1, 3, 12, 22, 73, 131, 428, 766, 2497, 4467, 14556, 26038, 84841, 151763, 494492
4 seqfan posts
Mon Nov 9 17:22:27 CET 2009 [seqfan] Re: (no subject)
Mon Nov 9 16:52:34 CET 2009 [seqfan] Re: (no subject)
Mon Nov 9 16:46:17 CET 2009 [seqfan] (no subject)
Mon Nov 9 16:42:16 CET 2009 [seqfan] (no subject)
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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