2^n + n - 1
0, 2, 5, 10, 19, 36, 69, 134, 263, 520, 1033, 2058, 4107, 8204, 16397, 32782, 65551
2 seqfan posts
Fri Feb 12 06:34:05 CET 2010 [seqfan] Re: Some questions about groups
Fri Feb 12 06:16:55 CET 2010 [seqfan] Re: Some questions about groups
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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