References to A005581

(n-1)*n*(n+4)/6.
0, 0, 2, 7, 16, 30, 50, 77, 112, 156, 210, 275, 352, 442, 546, 665, 800, 952, 1122


2 seqfan posts

Thu Jan 13 13:59:00 CET 2011    [seqfan] Re: Arrays with interior sorting, guess the series
Thu Jan 13 05:44:08 CET 2011    [seqfan] Re: Arrays with interior sorting, guess the series

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