References to A060544

Centered 9-gonal (or nonagonal) numbers. Every third triangular number, starting with a(1)=1.
1, 10, 28, 55, 91, 136, 190, 253, 325, 406, 496, 595, 703, 820, 946, 1081, 1225, 1378


1 seqfan posts

Thu Dec 2 18:16:11 CET 2010    [seqfan] Re: Trotter Math

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