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A077458
a(n)=(a(n-1)*a(n-2)+a(n-2)*a(n-3)+1)/a(n-4).
+0
1
1, 1, 1, 1, 3, 5, 19, 111, 735, 16739, 651829, 98407827, 87287056369, 513160504664273, 68717836252612920369, 358338159175285830378865425, 282106236246621697477649374210221427
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.
AT&T Labs Research
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