n*2^(n-1).
0, 1, 4, 12, 32, 80, 192, 448, 1024, 2304, 5120, 11264, 24576, 53248, 114688
2 seqfan posts
Mon Dec 12 17:20:10 CET 2011 [seqfan] Re: A086421 is duplicate of A000120 ?
Thu Aug 13 22:36:32 CEST 2009 [seqfan] Re: Rant on Maple code
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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