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A107300
a(n) = 2*a(n-1)+2*a(n-2)-2*a(n-3).
+0
1
3, 2, 8, 14, 40, 92, 236, 576, 1440, 3560, 8848, 21936, 54448, 135072, 335168, 831584, 2063360, 5119552, 12702656, 31517696, 78201600, 194033280, 481434368, 1194532096, 2963866368, 7353928192
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Maintained by
N. J. A. Sloane
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Last modified December 1 19:22 EST 2009. Contains 167811 sequences.
AT&T Labs Research
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