OFFSET
0,6
LINKS
Index entries for linear recurrences with constant coefficients, signature (0, 1, 1, 0, 0, 0, -1, -1, 0, 2, 0, -1, -1, 0, 0, 0, 1, 1, 0, -1).
FORMULA
a(0)=1, a(1)=0, a(2)=1, a(3)=1, a(4)=1, a(5)=2, a(6)=2, a(7)=2, a(8)=3, a(9)=3, a(10)=5, a(11)=4, a(12)=6, a(13)=6, a(14)=7, a(15)=9, a(16)=9, a(17)=10, a(18)=12, a(19)=12, a(n)=a(n-2)+a(n-3)-a(n-7)-a(n-8)+ 2*a(n-10)- a(n-12)-a(n-13)+a(n-17)+a(n-18)-a(n-20) [From Harvey P. Dale, Jan 19 2012]
MATHEMATICA
CoefficientList[Series[1/((1-x^2)(1-x^3)(1-x^5)(1-x^10)), {x, 0, 60}], x] (* or *) LinearRecurrence[{0, 1, 1, 0, 0, 0, -1, -1, 0, 2, 0, -1, -1, 0, 0, 0, 1, 1, 0, -1}, {1, 0, 1, 1, 1, 2, 2, 2, 3, 3, 5, 4, 6, 6, 7, 9, 9, 10, 12, 12}, 60] (* Harvey P. Dale, Jan 19 2012 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved