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A140992
a(0)=0, a(1)=1; for n>1 a(n)=a(n-2)+a(n-1)+
A000071
(n+1).
+0
1
0, 1, 2, 5, 11, 23, 46, 89, 168, 311, 567, 1021, 1820, 3217, 5646, 9849, 17091, 29523, 50794, 87081, 148820, 253611, 431087, 731065, 1237176, 2089633, 3523226, 5980669
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Maintained by
N. J. A. Sloane
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Last modified December 5 17:24 EST 2009. Contains 170342 sequences.
AT&T Labs Research
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