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A144408
Last digit of A135266(n).
0
0, 1, 5, 9, 0, 2, 6, 9, 9, 1, 6, 0, 0, 1, 5, 9, 0, 2, 6, 9, 9, 1, 6, 0, 0, 1, 5, 9, 0, 2, 6, 9, 9, 1, 6, 0, 0, 1, 5, 9, 0, 2, 6, 9, 9, 1, 6, 0, 0, 1, 5, 9, 0, 2, 6, 9, 9, 1, 6, 0, 0, 1, 5, 9, 0, 2, 6, 9, 9, 1, 6, 0, 0, 1, 5, 9, 0, 2, 6, 9, 9, 1, 6, 0, 0, 1, 5, 9, 0, 2, 6, 9, 9, 1, 6, 0, 0, 1, 5, 9, 0, 2
OFFSET
0,3
FORMULA
Period 12: a(n+12)=a(n).
Sums of periodic trisections: a(3n)+a(3n+3)+a(3n+6)+a(3n+9) = a(3n+1)+a(3n+4)+a(3n+7)+a(3n+10) = a(3n+2)+a(3n+5)+a(3n+8)+a(3n+11) = 16.
G.f.: x(6x^7-5x^6+8x^5+6x^4-8x^3+4x^2+4x+1)/((1-x)(1+x)(x^2+1)(x^2-x+1)(x^4-x^2+1)). - R. J. Mathar, Dec 02 2008
CROSSREFS
Sequence in context: A249205 A344966 A294613 * A371323 A019636 A269979
KEYWORD
nonn,base
AUTHOR
Paul Curtz, Sep 30 2008
EXTENSIONS
Edited by R. J. Mathar, Dec 02 2008
STATUS
approved