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 A158610 Expansion of (1+15*x)/(1-x-256*x^2). 0
 1, 16, 272, 4368, 74000, 1192208, 20136208, 325341456, 5480210704, 88767623440, 1491701563664, 24216213164304, 406091813462288, 6605442383524112, 110564946629869840, 1801558196812042512, 30106184534058721552 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 REFERENCES H. S. M. Coxeter, Regular Polytopes, 3rd ed., Dover, NY, 1973, page 221. LINKS Index entries for linear recurrences with constant coefficients, signature (1,256). FORMULA From Philippe Deléham, Mar 26 2009: (Start) a(n) = a(n-1) + 256*a(n-2), a(0)=1, a(1)=16. G.f.: (1+15x)/(1-x-256*x^2). (End) a(n) = (1/2)*((1/2 - (5/2)*sqrt(41))^n + (1/2 + (5/2)*sqrt(41))^n) + (31/410)*sqrt(41)*((1/2 + (5/2)*sqrt(41))^n - (1/2 - (5/2)*sqrt(41))^n), with n >= 0. - Paolo P. Lava, Mar 30 2009 MATHEMATICA LinearRecurrence[{1, 256}, {1, 16}, 20] (* Harvey P. Dale, Jan 10 2015 *) CROSSREFS Sequence in context: A249391 A197622 A002303 * A221176 A231695 A004382 Adjacent sequences:  A158607 A158608 A158609 * A158611 A158612 A158613 KEYWORD nonn,easy AUTHOR Roger L. Bagula, Mar 22 2009 STATUS approved

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Last modified December 2 16:46 EST 2020. Contains 338877 sequences. (Running on oeis4.)