References to A056000

n*(n+9)/2.
0, 5, 11, 18, 26, 35, 45, 56, 68, 81, 95, 110, 126, 143, 161, 180, 200, 221, 243, 266

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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