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2, 11, 85, 737, 6577, 59081, 531505, 4783097, 43046977, 387421001, 3486785425, 31381061657, 282429540577, 2541865836521, 22876792471345, 205891132127417, 1853020188917377, 16677181699797641, 150094635297261265
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..200
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FORMULA
| a(n) = 9*a(n-1)-2^n = 11*a(n-1)- 18*a(n-2).
G.f.: 1/(1-2*x)+1/(1-9*x). E.g.f.: e^(2*x)+e^(9*x). [From Mohammad K. Azarian (azarian(AT)evansville.edu), Jan 02 2009]
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MATHEMATICA
| Table[2^n + 9^n, {n, 0, 25}]
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PROG
| (MAGMA) [2^n + 9^n: n in [0..35]]; // Vincenzo Librandi, Apr 30 2011
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CROSSREFS
| Cf. A000051, A034472, A052539, A034474, A062394, A034491, A062395, A062396, A007689, A063376, A063481, A074600 - A074624.
Sequence in context: A086406 A158098 A104185 * A135404 A153304 A036076
Adjacent sequences: A074601 A074602 A074603 * A074605 A074606 A074607
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KEYWORD
| easy,nonn
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AUTHOR
| Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 25 2002
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