(8*3^n-5*(0)^n)/3.
1, 8, 24, 72, 216, 648, 1944, 5832, 17496, 52488, 157464, 472392, 1417176
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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