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A074532 a(n) = 2^n + 4^n + 5^n. 1
3, 11, 45, 197, 897, 4181, 19785, 94637, 456417, 2215781, 10815225, 53024477, 260921937, 1287820181, 6371967465, 31591352717, 156882923457, 780119453381, 3883417004505, 19348364759357, 96466944316977, 481235206811381 (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 (11,-38,40).

FORMULA

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

G.f.: 1/(1-2*x) + 1/(1-4*x) + 1/(1-5*x).

E.g.f.: exp(2*x) + exp(4*x) + exp(5*x). (End)

MATHEMATICA

Table[2^n + 4^n + 5^n, {n, 0, 20}]

PROG

(MAGMA) [2^n + 4^n + 5^n: n in [0..25]]; // Vincenzo Librandi, Jun 11 2011

CROSSREFS

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

Sequence in context: A151129 A151130 A216949 * A049186 A049160 A191243

Adjacent sequences:  A074529 A074530 A074531 * A074533 A074534 A074535

KEYWORD

easy,nonn

AUTHOR

Robert G. Wilson v, Aug 23 2002

STATUS

approved

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Last modified March 23 02:42 EDT 2019. Contains 321422 sequences. (Running on oeis4.)