Expansion of e.g.f.: exp(4*x/(1-2*x)) / sqrt(1-4*x^2).
A202828
Expansion of e.g.f.: exp(4*x/(1-2*x)) / sqrt(1-4*x^2).
Terms
- a(0) =1a(1) =4a(2) =36a(3) =400a(4) =5776a(5) =97344a(6) =1915456a(7) =42406144a(8) =1049760000a(9) =28558296064a(10) =848579961856
External references
- oeis: A202828