References to A055998

n*(n+5)/2.
0, 3, 7, 12, 18, 25, 33, 42, 52, 63, 75, 88, 102, 117, 133, 150, 168, 187, 207, 228, 250


1 seqfan posts

Fri Mar 12 10:09:44 CET 2010    [seqfan] editing A000217 Triangular numbers (long message)

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