Expansion of g.f. x*(1 +30*x +49*x^2 -71*x^3 -116*x^4)/((1+2*x)*(1-2*x^2) *(1-2*x-4*x^2)).
A121960
Expansion of g.f. x*(1 +30*x +49*x^2 -71*x^3 -116*x^4)/((1+2*x)*(1-2*x^2) *(1-2*x-4*x^2)).
Terms
- a(0) =1a(1) =30a(2) =59a(3) =237a(4) =698a(5) =2346a(6) =7452a(7) =24308a(8) =78328a(9) =253992a(10) =820976a(11) =2658384a(12) =8599520a(13) =27834528a(14) =90062784a(15) =291471680a(16) =943177600a(17) =3052274304a(18) =9877192448a(19) =31963612416a(20) =103435730432a(21) =334726433280
External references
- oeis: A121960