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A144465
Sequence of powers: a(n)=If [n == 0, 1, 5^n - 2^(n - 1)].
+0
1
1, 4, 23, 121, 617, 3109, 15593, 78061, 390497, 1952869, 9765113, 48827101, 244138577, 1220699029, 6103507433, 30517561741, 152587857857, 762939387589, 3814697134553, 19073486065981, 9536743111633
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 20 13:54 EST 2009. Contains 171081 sequences.
AT&T Labs Research
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