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 A171880 a(n) = a(n-1) + a(n-2)*a(n-3) + a(n-4)*a(n-5)^a(n-6) 0
 0, 0, 0, 1, 1, 1, 2, 4, 7, 16, 46, 166, 1014, 47066, 12348246366, 66716521529543607970475115226 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,7 COMMENTS First 6 terms are {0,0,0,1,1,1}; thereafter apply the recurrence. Note that 0^0=1. LINKS R. Munafo, Accelerating Sequences MATHEMATICA nxt[{a_, b_, c_, d_, e_, f_}]:={b, c, d, e, f, f+e*d+c*Max[1, b]^Max[1, a]}; NestList[ nxt, {0, 0, 0, 1, 1, 1}, 14][[All, 1]] (* Harvey P. Dale, Jan 18 2019 *) CROSSREFS Sequence in context: A343869 A137568 A010355 * A171874 A113878 A293793 Adjacent sequences:  A171877 A171878 A171879 * A171881 A171882 A171883 KEYWORD nonn AUTHOR Robert Munafo, Jan 21 2010 STATUS approved

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Last modified May 15 18:26 EDT 2021. Contains 343920 sequences. (Running on oeis4.)