a(0)=0,a(1)=1,a(2)=2,a(3)=5 then a(n+4)=2a(n+3)+2a(n+2)+2a(n+1)-a(n).
0, 1, 2, 5, 16, 45, 130, 377, 1088, 3145, 9090, 26269, 75920, 219413, 634114
3 seqfan posts
Fri Mar 27 16:59:34 CET 2009 [seqfan] Re: Divisibility sequences
Fri Mar 27 16:42:29 CET 2009 [seqfan] Divisibility sequences
Sun Mar 8 18:12:29 CET 2009 [seqfan] An apology
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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