Expansion of g.f. (-1)/(2*x^2+2*x) +(-2*x^3-3*x^2+1) / (sqrt(x^4+4*x^3-2*x^2-4*x+1)*(2*x^2+2*x)).
A247173
Expansion of g.f. (-1)/(2*x^2+2*x) +(-2*x^3-3*x^2+1) / (sqrt(x^4+4*x^3-2*x^2-4*x+1)*(2*x^2+2*x)).
Terms
- a(0) =1a(1) =1a(2) =7a(3) =25a(4) =101a(5) =397a(6) =1583a(7) =6337a(8) =25513a(9) =103161a(10) =418727a(11) =1705129a(12) =6963165a(13) =28504981a(14) =116941727a(15) =480667137a(16) =1979039633a(17) =8160609457a(18) =33696358983a(19) =139308985465a(20) =576583448021
External references
- oeis: A247173