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A074565
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4^n + 6^n + 7^n.
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1
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3, 17, 101, 623, 3953, 25607, 168401, 1119863, 7509953, 50693447, 343990001, 2344318103, 16034846753, 110016813287, 756855672401, 5218820236343, 36058335444353, 249574353301127, 1730042274055601, 12008529803290583
(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..1000
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FORMULA
| G.f.: 1/(1-4*x)+1/(1-6*x)+1/(1-7*x). E.g.f.: e^(4*x)+e^(6*x)+e^(7*x). [From Mohammad K. Azarian (azarian(AT)evansville.edu), Dec 30 2008]
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MATHEMATICA
| Table[4^n + 6^n + 7^n, {n, 0, 20}]
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PROG
| (MAGMA) [4^n + 6^n + 7^n: n in [0..20]]; // Vincenzo Librandi, Aug 25 2011
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CROSSREFS
| Cf. A001550, A001576, A034513, A001579, A074501 - A074580.
Sequence in context: A001541 A161473 A161940 * A054365 A116886 A163064
Adjacent sequences: A074562 A074563 A074564 * A074566 A074567 A074568
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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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