n*20^(n-1).
1, 40, 1200, 32000, 800000, 19200000, 448000000, 10240000000, 230400000000
1 seqfan posts
Thu Feb 5 22:44:07 CET 2009 [seqfan] A061653 corrected!
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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