Expansion of e.g.f. (2-2*x-x^2)/((1-x)*(1-x-x^2)).
A052660
Expansion of e.g.f. (2-2*x-x^2)/((1-x)*(1-x-x^2)).
Terms
- a(0) =2a(1) =2a(2) =6a(3) =24a(4) =144a(5) =1080a(6) =10080a(7) =110880a(8) =1411200a(9) =20321280a(10) =326592000a(11) =5787936000a(12) =112086374400
External references
- oeis: A052660