a(n)=4a(n-1)-2a(n-2).
1, 4, 14, 48, 164, 560, 1912, 6528, 22288, 76096, 259808, 887040, 3028544
3 seqfan posts
Tue Dec 15 02:58:04 CET 2009 [seqfan] Re: [math-fun] Divisibility sequences in OEIS.
Tue Dec 15 02:42:24 CET 2009 [seqfan] Re: [math-fun] Divisibility sequences in OEIS.
Sun Dec 13 19:54:06 CET 2009 [seqfan] Re: [math-fun] Divisibility sequences in OEIS.
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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