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A074558
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3^n + 7^n + 8^n.
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1
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3, 18, 122, 882, 6578, 49818, 380522, 2922882, 22548578, 174591018, 1356276122, 10567438482, 82561295378, 646646418618, 5076274366922, 39931947947682, 314707950326978, 2484430456812618, 19642812494812922, 155514084423490482
(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/(1-3*x)+1/(1-7*x)+1/(1-8*x). E.g.f.: exp(3*x)+exp(7*x)+exp(8*x). [From Mohammad K. Azarian, Dec 30 2008]
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MATHEMATICA
| Table[3^n + 7^n + 8^n, {n, 0, 20}]
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PROG
| (MAGMA) [3^n + 7^n + 8^n: n in [0..20]]; // Vincenzo Librandi, Aug 24 2011
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CROSSREFS
| Cf. A001550, A001576, A034513, A001579, A074501 - A074580.
Sequence in context: A011792 A183145 A127188 * A074564 A108241 A199421
Adjacent sequences: A074555 A074556 A074557 * A074559 A074560 A074561
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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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