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 A174927 Periodic sequence: Repeat 1, 64. 3
 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64, 1, 64 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Interleaving of A000012 and 2*A010871. Also continued fraction expansion of (4+sqrt(17))/8. First differences of A174928. LINKS Table of n, a(n) for n=0..83. Index entries for linear recurrences with constant coefficients, signature (0, 1). FORMULA a(n) = (65-63*(-1)^n)/2. a(n) = a(n-2) for n > 1; a(0) = 0, a(1) = 64. a(n) = -a(n-1)+65 for n > 0; a(0) = 1. a(n) = ((n+1) mod 2)+64*(n mod 2). G.f.: (1+64*x)/((1-x)*(1+x)). MATHEMATICA PadRight[{}, 100, {1, 64}] (* Harvey P. Dale, Jun 16 2013 *) PROG (Magma) &cat[ [1, 64]: n in [0..41] ]; [ (65-63*(-1)^n)/2: n in [0..83] ]; CROSSREFS Cf. A000012 (all 1's sequence), A010871 (all 32's sequence), A010689 (repeat 1, 8), A174930 (decimal expansion of (4+sqrt(17))/8), A174928. Sequence in context: A221761 A085339 A203262 * A303329 A301911 A302155 Adjacent sequences: A174924 A174925 A174926 * A174928 A174929 A174930 KEYWORD cofr,easy,nonn AUTHOR Klaus Brockhaus, Apr 02 2010 STATUS approved

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Last modified March 2 19:19 EST 2024. Contains 370498 sequences. (Running on oeis4.)