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A074529 a(n) = 2^n + 3^n + 7^n. 1
3, 12, 62, 378, 2498, 17082, 118442, 825858, 5771618, 40373802, 282535322, 1977505938, 13841822738, 96890612922, 678227872202, 4747575891618, 33232973681858, 232630643258442, 1628413985593082, 11398896348158898 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..200

Index entries for linear recurrences with constant coefficients, signature (12,-41,42).

FORMULA

From Mohammad K. Azarian, Dec 27 2008: (Start)

G.f.: 1/(1-2*x) + 1/(1-3*x) + 1/(1-7*x).

E.g.f.: exp(2*x) + exp(3*x) + exp(7*x). (End)

MATHEMATICA

Table[2^n + 3^n + 7^n, {n, 0, 20}]

LinearRecurrence[{12, -41, 42}, {3, 12, 62}, 20] (* Harvey P. Dale, Mar 29 2020 *)

PROG

(MAGMA) [2^n + 3^n + 7^n: n in [0..25]]; // Vincenzo Librandi, Jun 11 2011

CROSSREFS

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

Sequence in context: A074516 A045740 A187820 * A143916 A323630 A020033

Adjacent sequences:  A074526 A074527 A074528 * A074530 A074531 A074532

KEYWORD

easy,nonn

AUTHOR

Robert G. Wilson v, Aug 23 2002

STATUS

approved

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Last modified May 31 13:01 EDT 2020. Contains 334748 sequences. (Running on oeis4.)