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A083098
a(n)=2a(n-1)+6a(n-2).
+0
18
1, 1, 8, 22, 92, 316, 1184, 4264, 15632, 56848, 207488, 756064, 2757056, 10050496, 36643328, 133589632, 487039232, 1775616256, 6473467904, 23600633344, 86042074112, 313687948288, 1143628341248, 4169384372224, 15200538791936
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Maintained by
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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.
AT&T Labs Research
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