References to A144521

Tetrahedral numbers composed of one prime and two nonprimes.
0, 20, 56, 84, 165, 220, 364, 455, 680, 816, 1140, 1330, 1771, 2024, 2300, 3654


1 seqfan posts

Fri Mar 12 14:58:50 CET 2010    [seqfan] The Fuer Elise sequences

Index of A-numbers in seqfan: by ascending order    by month    by frequency    by keyword
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