a(n) = d^d, where d is the number of digits in n.
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4
3 seqfan posts
Thu Sep 29 18:03:10 CEST 2011 [seqfan] Re: A138902 and A138908.
Thu Sep 29 18:03:10 CEST 2011 [seqfan] Re: A138902 and A138908.
Thu Sep 29 10:00:52 CEST 2011 [seqfan] A138902 and A138908.
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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