References to A055272

First differences of 7^n (A000420).
1, 6, 42, 294, 2058, 14406, 100842, 705894, 4941258, 34588806, 242121642

1 seqfan posts

Wed Aug 18 12:46:16 CEST 2010    [seqfan] Foxy sequences
Index of A-numbers in seqfan: by ascending order    by month    by frequency    by keyword
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