

A158001


Period 6: repeat [9, 10, 9, 4, 4, 1].


1



9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1
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OFFSET

1,1


LINKS



FORMULA

G.f.: x*(9+10*x+9*x^2+4*x^3+4*x^4+x^5)/(1x^6).
a(n) = a(n6) for n > 6.
a(n) = (37  7*cos(n*Pi)  17*cos(n*Pi/3)  7*cos(2*n*Pi/3) + 11*sqrt(3)*sin(n*Pi/3)  sqrt(3)*sin(2*n*Pi/3))/6. (End)


MAPLE



MATHEMATICA



PROG



CROSSREFS



KEYWORD

nonn,easy


AUTHOR



STATUS

approved



