(9^n - 1)/8.
0, 1, 10, 91, 820, 7381, 66430, 597871, 5380840, 48427561, 435848050
2 seqfan posts
Sun Jan 25 16:36:32 CET 2009 [seqfan] Re: A033035: Change of parity:End of thread!
Sun Jan 25 14:39:55 CET 2009 [seqfan] Re: A033035: Change of parity
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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