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A074561 a(n) = 4^n + 5^n + 6^n. 1
3, 15, 77, 405, 2177, 11925, 66377, 374445, 2135777, 12292965, 71280377, 415819485, 2437700177, 14348506005, 84736115177, 501776304525, 2977992765377, 17706778767045, 105443373410777, 628708104245565 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
LINKS
FORMULA
From Mohammad K. Azarian, Dec 30 2008: (Start)
G.f.: 1/(1-4*x) + 1/(1-5*x) + 1/(1-6*x).
E.g.f.: exp(4*x) + exp(5*x) + exp(6*x). (End)
MATHEMATICA
Table[4^n + 5^n + 6^n, {n, 0, 19}]
PROG
(Magma) [4^n + 5^n + 6^n: n in [0..20]]; // Vincenzo Librandi, Aug 24 2011
CROSSREFS
Sequence in context: A151327 A037766 A037654 * A026115 A027911 A125700
KEYWORD
easy,nonn
AUTHOR
Robert G. Wilson v, Aug 23 2002
STATUS
approved

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Last modified March 28 14:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)