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Search: id:A074552
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A074552 3^n + 5^n + 7^n. +0
1
3, 15, 83, 495, 3107, 20175, 134003, 903855, 6161987, 42326415, 292299923, 2026332015, 14085959267, 98111307855, 684331371443, 4778093436975, 33385561506947, 233393582580495, 1632228682596563, 11417969833962735 (list; graph; listen)
OFFSET

0,1

FORMULA

G.f.: 1/(1-3*x)+1/(1-5*x)+1/(1-7*x). E.g.f.: e^(3*x)+e^(5*x)+e^(7*x). [From Mohammad K. Azarian (azarian(AT)evansville.edu), Dec 30 2008]

MATHEMATICA

Table[3^n + 5^n + 7^n, {n, 0, 20}]

CROSSREFS

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

Sequence in context: A052451 A026019 A118356 this_sequence A115910 A106569 A026032

Adjacent sequences: A074549 A074550 A074551 this_sequence A074553 A074554 A074555

KEYWORD

easy,nonn

AUTHOR

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

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.


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