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Search: id:A074536
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A074536 2^n + 4^n + 9^n. +0
1
3, 15, 101, 801, 6833, 60105, 535601, 4799481, 43112513, 387683145, 3487834001, 31385255961, 282446317793, 2541932945385, 22877060906801, 205892205869241, 1853024483884673, 16677198879666825, 150094704016738001 (list; graph; listen)
OFFSET

0,1

FORMULA

G.f.: 1/(1-2*x)+1/(1-4*x)+1/(1-9*x). E.g.f.: e^(2*x)+e^(4*x)+e^(9*x). [From Mohammad K. Azarian (azarian(AT)evansville.edu), Dec 27 2008]

MATHEMATICA

Table[2^n + 4^n + 9^n, {n, 0, 20}]

CROSSREFS

Cf. A001550, A001576, A034513, A001579, A074501 - A074580.

Sequence in context: A135883 A147664 A074521 this_sequence A152093 A109777 A135903

Adjacent sequences: A074533 A074534 A074535 this_sequence A074537 A074538 A074539

KEYWORD

easy,nonn

AUTHOR

Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 23 2002

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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