References to A069693

Triangular numbers with either no internal digits or all internal digits are 0.
0, 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91, 105, 300, 406, 703, 903, 3003, 4005


1 seqfan posts

Sun Mar 15 02:46:16 CET 2009    [seqfan] A069693 .. A069700 (triangular numbers of the form abb...bc) are fini and full

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