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A168037 Period length 18: repeat 0,1,2,0,8,7,0,4,5,0,5,4,0,7,8,0,2,1. 0
0, 1, 2, 0, 8, 7, 0, 4, 5, 0, 5, 4, 0, 7, 8, 0, 2, 1, 0, 1, 2, 0, 8, 7, 0, 4, 5, 0, 5, 4, 0, 7, 8, 0, 2, 1, 0, 1, 2, 0, 8, 7, 0, 4, 5, 0, 5, 4, 0, 7, 8, 0, 2, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
COMMENTS
Represents also the decimal expansion of 447668335336223/37037037037037037.
LINKS
Index entries for linear recurrences with constant coefficients, signature (0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1).
FORMULA
a(n) = A129194(n) mod 9.
a(n) = a(n-18).
a(n+1) = a(17-n), 0<=n<= 16, palindromic.
G.f. ( -x*(1+2*x+8*x^3+7*x^4+4*x^6+5*x^7+5*x^9+4*x^10+7*x^12+8*x^13+2*x^15+x^16) ) / ( (x-1)*(1+x+x^2)*(1+x^3+x^6)*(1+x)*(1-x+x^2)*(1-x^3+x^6) ). - R. J. Mathar, Jan 22 2011
MATHEMATICA
PadRight[{}, 60, {0, 1, 2, 0, 8, 7, 0, 4, 5, 0, 5, 4, 0, 7, 8, 0, 2, 1}] (* Harvey P. Dale, Jan 17 2021 *)
CROSSREFS
Cf. A154811.
Sequence in context: A243443 A096609 A318136 * A019658 A366164 A021483
KEYWORD
nonn,easy
AUTHOR
Paul Curtz, Nov 17 2009
STATUS
approved

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Last modified May 23 08:52 EDT 2024. Contains 372760 sequences. (Running on oeis4.)