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 A116554 Anti-Harborth alternating chaotic sequence, 5th type. 6
 1, 7, 8, 49, 57, 56, 71, 343, 400, 399, 505, 392, 505, 497, 624, 2401, 2815, 2800, 3543, 2793, 3592, 3535, 4439, 2744, 3641, 3535, 4432, 3479, 4481, 4368, 5489, 16807, 19832, 19705, 24921, 19600, 25215, 24801, 31144, 19551, 25887, 25144, 31529 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS G. C. Greubel, Table of n, a(n) for n = 0..2500 H. Harborth, Number of Odd Binomial Coefficients, Proc. Amer. Math. Soc. 62, 19-22, 1977. Eric Weisstein's World of Mathematics, Stolarsky-Harborth Constant FORMULA From G. C. Greubel, Oct 30 2016: (Start) a(2*n+1) = 7*a(n). a(2*n+2) = 8*a(n) + a(n-1). (End) MATHEMATICA b[0] := 0; b[1] := 1; b[n_?EvenQ] := b[n] = 7*b[n/2]; b[n_?OddQ] := b[n] = 8*b[(n - 1)/2] + b[(n - 3)/2]; a = Table[b[n], {n, 1, 70}] CROSSREFS Cf. A116528, A116529, A116552, A116553, A116555. Sequence in context: A033044 A025630 A036566 * A038274 A201919 A249310 Adjacent sequences:  A116551 A116552 A116553 * A116555 A116556 A116557 KEYWORD nonn,obsc AUTHOR Roger L. Bagula, Mar 15 2006 EXTENSIONS Edited by N. J. A. Sloane, Fab 11 2007 Name changed by G. C. Greubel, Oct 30 2016 STATUS approved

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Last modified October 23 23:21 EDT 2019. Contains 328379 sequences. (Running on oeis4.)