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 A010709 Constant sequence: the all 4's sequence. 14
 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS Consider from A061037, Balmer, A145980 (29,139,323,581,) mod 9 = period9:repeat 2,4,8,5,4,5,8,4,2 (palindrom) = A146079. a(n)=A146079(1),A146079(4),A146079(7),A146079(10), .. generally A146079(3n+1 or A016777). - Paul Curtz, Nov 01 2008 From Klaus Brockhaus, May 25 2010: (Start) Continued fraction expansion of 2+sqrt(5). Decimal expansion of 4/9. Inverse binomial transform of A020707. (End) LINKS Tanya Khovanova, Recursive Sequences INRIA Algorithms Project, Encyclopedia of Combinatorial Structures 1012 Index entries for linear recurrences with constant coefficients, signature (1). FORMULA From Klaus Brockhaus, May 25 2010: (Start) a(n) = 4. G.f.: 4/(1-x). (End) E.g.f.: 4*e^x. - Vincenzo Librandi, Jan 29 2012 PROG (PARI) 4 \\ Charles R Greathouse IV, Apr 07 2012 (Maxima) makelist(4, n, 0, 30); /* Martin Ettl, Nov 09 2012 */ CROSSREFS From Klaus Brockhaus, May 25 2010: (Start) Equals 4*A000012, 2*A007395, A010731/2, A010855/4, A010871/8. Cf. A098317 (decimal expansion of 2+sqrt(5)), A020707 (2^(n+2)). (End) Sequence in context: A088849 A251539 A123932 * A138908 A032564 A141248 Adjacent sequences:  A010706 A010707 A010708 * A010710 A010711 A010712 KEYWORD nonn,easy AUTHOR STATUS approved

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