a(n) = 4*a(n-1)-a(n-2) with a(0) = 0, a(1) = 1.
0, 1, 4, 15, 56, 209, 780, 2911, 10864, 40545, 151316, 564719, 2107560, 7865521
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
13 seqfan posts
Sun Oct 30 10:53:22 CET 2011 [seqfan] Re: Interesting set of palindromes
Thu Mar 10 23:29:24 CET 2011 [seqfan] NOT Re: Toroidal crossing number of K_n
Fri Dec 11 20:40:43 CET 2009 [seqfan] Divisibility sequences in OEIS.
Mon Mar 30 10:46:52 CEST 2009 [seqfan] Re: Divisibilty sequences
Sun Mar 29 18:56:04 CEST 2009 [seqfan] Re: Divisibilty sequences
Sun Mar 29 06:52:58 CEST 2009 [seqfan] Re: Divisibilty sequences
Sun Mar 29 00:03:29 CET 2009 [seqfan] Re: Divisibilty sequences
Sat Mar 28 20:33:58 CET 2009 [seqfan] Divisibilty sequences
Fri Mar 27 16:59:34 CET 2009 [seqfan] Re: Divisibility sequences
Fri Mar 27 16:42:29 CET 2009 [seqfan] Divisibility sequences
Tue Feb 3 16:50:04 CET 2009 [seqfan] Re: Sequence A139400
Tue Feb 3 01:30:15 CET 2009 [seqfan] Sequence A139400
Sun Jan 11 23:36:02 CET 2009 [seqfan] Index of linear recurrences
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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