References to A025579

a(1)=1, a(2)=2, a(n) = 4*3^(n-3) for n >= 3.
1, 2, 4, 12, 36, 108, 324, 972, 2916, 8748, 26244, 78732, 236196, 708588, 2125764


1 seqfan posts

Sun Sep 13 18:42:04 CEST 2009    [seqfan] Re: Duplicates

Index of A-numbers in seqfan: by ascending order    by month    by frequency    by keyword
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