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A140976
Period length 10: repeat 8, 8, 6, 6, 4, 4, 2, 2, 0, 0.
0
8, 8, 6, 6, 4, 4, 2, 2, 0, 0, 8, 8, 6, 6, 4, 4, 2, 2, 0, 0, 8, 8, 6, 6, 4, 4, 2, 2, 0, 0, 8, 8, 6, 6, 4, 4, 2, 2, 0, 0, 8, 8, 6, 6, 4, 4, 2, 2, 0, 0, 8, 8, 6, 6, 4, 4, 2, 2, 0, 0, 8, 8, 6, 6, 4, 4, 2, 2, 0, 0, 8, 8, 6, 6, 4, 4, 2, 2, 0, 0, 8, 8, 6, 6, 4, 4, 2, 2, 0, 0
OFFSET
0,1
COMMENTS
The subsequence of even terms of A140975.
FORMULA
Also doubled A059631(n+1) mod 10.
G.f.: ( -8-6*x^2-4*x^4-2*x^6 ) / ( (x-1)*(1+x+x^2+x^3+x^4)*(1-x+x^2-x^3+x^4) ). - R. J. Mathar, Jul 08 2011
MATHEMATICA
PadRight[{}, 100, {8, 8, 6, 6, 4, 4, 2, 2, 0, 0}] (* Harvey P. Dale, Jun 03 2012 *)
CROSSREFS
KEYWORD
nonn,easy,less
AUTHOR
Paul Curtz, Jul 28 2008
EXTENSIONS
More terms from Jinyuan Wang, Feb 26 2020
STATUS
approved