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A086903
a(n) = 8a(n-1) - a(n-2), starting with a(0) = 2 and a(1) = 8, a(n) = (4+sqrt(15))^n + (4-sqrt(15))^n.
+0
1
2, 8, 62, 488, 3842, 30248, 238142, 1874888, 14760962, 116212808, 914941502, 7203319208, 56711612162, 446489578088, 3515205012542, 27675150522248, 217885999165442, 1715412842801288, 13505416743244862, 106327921103157608
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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 19 21:04 EST 2009. Contains 171054 sequences.
AT&T Labs Research
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