Number of n-digit numbers that are divisible by 5^n.
1, 3, 7, 14, 28, 57, 115, 230, 460, 921, 1843, 3686, 7372, 14745, 29491, 58982
2 seqfan posts
Thu Jun 18 20:52:45 CEST 2009 [seqfan] Re: Re counting problem
Thu Jun 18 18:15:56 CEST 2009 [seqfan] Re counting problem
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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