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 A020793 Decimal expansion of 1/6. 5
 1, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Except for the first term identical to A010722, A040006 and A021019. Except for the first terms the same as A021028, A021100, A021388, A071279, A101272, A168608, A177057,... - M. F. Hasler, Oct 24 2011 Also, decimal expansion of Sum_{k>=1} 1/7^k. - Bruno Berselli, Jan 03 2014 Decimal expansion of gamma(1) = 5/3 (with offset 1), where gamma(n) = Cp(n)/Cv(n) = is the n-th Poisson's constant. For the definition of Cp and Cv see A272002. - Natan Arie' Consigli, Jul 10 2016 LINKS Wikipedia, Poisson's constant. FORMULA a(n) = 6^n mod 10. - Zerinvary Lajos, Nov 26 2009 10 * 1/6 = 5/3 = (5/2 R)/(3/2 R) = Cp(1)/Cv(1) = A272002/A272001, with R = A081822 (or A070064). - Natan Arie' Consigli, Jul 10 2016 G.f.: (1 + 5*x)/(1 - x). - Ilya Gutkovskiy, Jul 10 2016 Equals Sum_{k>=1} 1/(k*Pi)^2 - Maciej Kaniewski, Sep 14 2017 PROG (PARI) a(n)=6-5*!n  \\ M. F. Hasler, Oct 24 2011 CROSSREFS Sequence in context: A165059 A010722 * A021019 A177057 A082510 A113427 Adjacent sequences:  A020790 A020791 A020792 * A020794 A020795 A020796 KEYWORD nonn,cons,easy AUTHOR STATUS approved

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