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A054492
a(n)=3a(n-1)-a(n-2), a(0)=1,a(0)=6.
+0
3
1, 6, 17, 45, 118, 309, 809, 2118, 5545, 14517, 38006, 99501, 260497, 681990, 1785473, 4674429, 12237814, 32039013, 83879225, 219598662, 574916761, 1505151621, 3940538102, 10316462685, 27008849953, 70710087174
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Maintained by
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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.
AT&T Labs Research
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