a(n+1) = 5*a(n) - 2*a(n-1)
5, 21, 95, 433, 1975, 9009, 41095, 187457, 855095, 3900561, 17792615, 81161953
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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