OFFSET
0,5
LINKS
Index entries for linear recurrences with constant coefficients, signature (0, 1, 0, 1, 0, -1, 0, 0, 1, 0, -1, 1, -1, -1, 1, -1, 0, 1, 0, 0, -1, 0, 1, 0, 1, 0, -1).
FORMULA
a(0)=1, a(1)=0, a(2)=1, a(3)=0, a(4)=2, a(5)=0, a(6)=2, a(7)=0, a(8)=3, a(9)=1, a(10)=3, a(11)=1, a(12)=5, a(13)=2, a(14)=5, a(15)=2, a(16)=7, a(17)=3, a(18)=8, a(19)=3, a(20)=10, a(21)=5, a(22)=11, a(23)=5, a(24)=14, a(25)=7, a(26)=15, a(n)=a(n-2)+a(n-4)-a(n-6)+a(n-9)-a(n-11)+a(n-12)-a(n-13)-a(n-14)+a(n-15)- a(n-16)+ a(n-18)-a(n-21)+a(n-23)+a(n-25)-a(n-27). - Harvey P. Dale, Mar 03 2014
MATHEMATICA
CoefficientList[Series[1/((1-x^2)(1-x^4)(1-x^9)(1-x^12)), {x, 0, 70}], x] (* or *) LinearRecurrence[{0, 1, 0, 1, 0, -1, 0, 0, 1, 0, -1, 1, -1, -1, 1, -1, 0, 1, 0, 0, -1, 0, 1, 0, 1, 0, -1}, {1, 0, 1, 0, 2, 0, 2, 0, 3, 1, 3, 1, 5, 2, 5, 2, 7, 3, 8, 3, 10, 5, 11, 5, 14, 7, 15}, 70] (* Harvey P. Dale, Mar 03 2014 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved