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 A010700 Period 2: repeat (2,10). 4
 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10, 2, 10 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS Continued fraction expansion of A176057. - R. J. Mathar, Mar 08 2012 LINKS Index entries for linear recurrences with constant coefficients, signature (0,1). FORMULA a(n) = -4*(-1)^n + 6 = 10*(n mod 2)+2*((n+1) mod 2) - Paolo P. Lava, Oct 20 2006 G.f. (2+10*x)/((1-x)*(1+x)). - R. J. Mathar, Nov 21 2011 a(n) = 3^(1-(-1)^n) + 1. [Bruno Berselli, Dec 29 2015] PROG (PARI) a(n)=2+n%2*8 \\ Charles R Greathouse IV, Dec 21 2011 (MAGMA) &cat [[2, 10]^^35]; // Bruno Berselli, Dec 29 2015 CROSSREFS Cf. A010679: 3^(1-(-1)^n) - 1. Sequence in context: A102775 A154032 A221551 * A121521 A280033 A188635 Adjacent sequences:  A010697 A010698 A010699 * A010701 A010702 A010703 KEYWORD nonn,easy AUTHOR STATUS approved

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Last modified July 15 20:00 EDT 2019. Contains 325056 sequences. (Running on oeis4.)