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A074532
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2^n + 4^n + 5^n.
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1
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3, 11, 45, 197, 897, 4181, 19785, 94637, 456417, 2215781, 10815225, 53024477, 260921937, 1287820181, 6371967465, 31591352717, 156882923457, 780119453381, 3883417004505, 19348364759357, 96466944316977, 481235206811381
(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
| G.f.: 1/(1-2*x)+1/(1-4*x)+1/(1-5*x). E.g.f.: exp(2*x)+exp(4*x)+exp(5*x). [From Mohammad K. Azarian (azarian(AT)evansville.edu), Dec 27 2008]
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MATHEMATICA
| Table[2^n + 4^n + 5^n, {n, 0, 20}]
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PROG
| (MAGMA) [2^n + 4^n + 5^n: n in [0..25]]; // Vincenzo Librandi, Jun 11 2011
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CROSSREFS
| Cf. A001550, A001576, A034513, A001579, A074501 - A074580.
Sequence in context: A063024 A151129 A151130 * A049186 A049160 A191243
Adjacent sequences: A074529 A074530 A074531 * A074533 A074534 A074535
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KEYWORD
| easy,nonn
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AUTHOR
| Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 23 2002
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