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A074525
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1^n + 8^n + 9^n.
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0
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3, 18, 146, 1242, 10658, 91818, 793586, 6880122, 59823938, 521638218, 4560526226, 39970994202, 351149013218, 3091621642218, 27274838966066, 241075504183482, 2134495165562498, 18928981513351818, 168109033806481106
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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FORMULA
| G.f.: 1/(1-x)+1/(1-8*x)+1/(1-9*x). E.g.f.: e^x+e^(8*x)+e^(9*x). [From Mohammad K. Azarian (azarian(AT)evansville.edu), Dec 26 2008]
a(n)=17*a(n-1)-72*a(n-2)+56 with a(0)=3, a(1)=18 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jul 21 2010]
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MATHEMATICA
| Table[1^n + 8^n + 9^n, {n, 0, 20}]
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CROSSREFS
| Cf. A001550, A001576, A034513, A001579, A074501 - A074580.
Sequence in context: A107708 A123308 A177383 * A118331 A138420 A152409
Adjacent sequences: A074522 A074523 A074524 * A074526 A074527 A074528
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KEYWORD
| easy,nonn
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AUTHOR
| Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 23 2002
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