References to A045943

Triangular matchstick numbers: 3*n*(n+1)/2.
0, 3, 9, 18, 30, 45, 63, 84, 108, 135, 165, 198, 234, 273, 315, 360, 408, 459, 513, 570

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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