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A011761
a(n) = a(n-1) + a(n-3).
+0
1
1, 1, 5, 6, 7, 12, 18, 25, 37, 55, 80, 117, 172, 252, 369, 541, 793, 1162, 1703, 2496, 3658, 5361, 7857, 11515, 16876, 24733, 36248, 53124, 77857, 114105, 167229, 245086, 359191, 526420, 771506, 1130697
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.
AT&T Labs Research
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