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A102446
a(n) = a(n-1) + 4*a(n-2), a(0) = a(1) = 2.
+0
2
2, 2, 10, 18, 58, 130, 362, 882, 2330, 5858, 15178, 38610, 99322, 253762, 651050, 1666098, 4270298, 10934690, 28015882, 71754642, 183818170, 470836738, 1206109418, 3089456370, 7913894042, 20271719522, 51927295690, 133014173778
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Maintained by
N. J. A. Sloane
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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.
AT&T Labs Research
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