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A021270 Decimal expansion of 1/266. 1
0, 0, 3, 7, 5, 9, 3, 9, 8, 4, 9, 6, 2, 4, 0, 6, 0, 1, 5, 0, 3, 7, 5, 9, 3, 9, 8, 4, 9, 6, 2, 4, 0, 6, 0, 1, 5, 0, 3, 7, 5, 9, 3, 9, 8, 4, 9, 6, 2, 4, 0, 6, 0, 1, 5, 0, 3, 7, 5, 9, 3, 9, 8, 4, 9, 6, 2, 4, 0, 6, 0, 1, 5, 0, 3, 7, 5, 9, 3, 9, 8, 4, 9, 6, 2, 4, 0, 6, 0, 1, 5, 0, 3, 7, 5, 9, 3, 9, 8 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

FORMULA

a(n) = (1/306)*(-59*(n mod 18)-8*((n+1) mod 18)+111*((n+2) mod 18)-92*((n+3) mod 18)+77*((n+4) mod 18)-25*((n+5) mod 18)+77*((n+6) mod 18)+60*((n+7) mod 18)-76*((n+8) mod 18)+77*((n+9) mod 18)+26*((n+10) mod 18)-93*((n+11) mod 18)+111*((n+12) mod 18)-59*((n+13) mod 18)+43*((n+14) mod 18)-59*((n+15) mod 18)-42*((n+16) mod 18)+94*((n+17) mod 18))-5*(C(2*n,n) mod 2). [Paolo P. Lava, Oct 27 2009]

From Chai Wah Wu, Jun 21 2016: (Start)

a(n) = a(n-1) - a(n-9) + a(n-10) for n > 10.

G.f.: x^2*(-5*x^8 + 4*x^7 + x^6 - 6*x^5 + 6*x^4 - 4*x^3 + 2*x^2 - 4*x - 3)/(x^10 - x^9 + x - 1). (End)

MATHEMATICA

PadLeft[First@ #, Abs@ Last@ # + Length@ First@ #] &@ RealDigits[N[1/266, 120]] (* Michael De Vlieger, Jun 21 2016 *)

CROSSREFS

Sequence in context: A151685 A019809 A305741 * A259565 A113910 A264983

Adjacent sequences:  A021267 A021268 A021269 * A021271 A021272 A021273

KEYWORD

nonn,cons,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified November 18 19:59 EST 2019. Contains 329288 sequences. (Running on oeis4.)