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Search: id:A074613
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A074613 4^n + 7^n. +0
1
2, 11, 65, 407, 2657, 17831, 121745, 839927, 5830337, 40615751, 283523825, 1981521047, 13858064417, 96956119271, 678491508305, 4748635251767, 33237225536897, 232647693856391, 1628482317387185, 11399170063280087 (list; graph; listen)
OFFSET

0,1

FORMULA

G.f.: 1/(1-4*x)+1/(1-7*x). E.g.f.: e^(4*x)+e^(7*x). [From Mohammad K. Azarian (azarian(AT)evansville.edu), Jan 11 2009]

MATHEMATICA

Table[4^n + 7^n, {n, 0, 25}]

CROSSREFS

Cf. A000051, A034472, A052539, A034474, A062394, A034491, A062395, A062396, A007689, A063376, A063481, A074600 - A074624.

Adjacent sequences: A074610 A074611 A074612 this_sequence A074614 A074615 A074616

Sequence in context: A038725 A161947 A001565 this_sequence A039632 A143816 A160852

KEYWORD

easy,nonn

AUTHOR

Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 26 2002

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Last modified November 8 20:39 EST 2009. Contains 166234 sequences.


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