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A055269
a(n)=4a(n-1)-a(n-2)+3; a(0)=1, a(1)=7.
+0
1
1, 7, 30, 116, 437, 1635, 6106, 22792, 85065, 317471, 1184822, 4421820, 16502461, 61588027, 229849650, 857810576, 3201392657, 11947760055, 44589647566, 166410830212, 621053673285
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.
AT&T Labs Research
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