E.g.f. [1 -3x -sqrt(1-6x+x^2) -x*(1-x-sqrt(1-6x+x^2)) ]/2.
A052736
E.g.f. [1 -3x -sqrt(1-6x+x^2) -x*(1-x-sqrt(1-6x+x^2)) ]/2.
Terms
- a(0) =0a(1) =0a(2) =2a(3) =24a(4) =384a(5) =8160a(6) =218880a(7) =7116480a(8) =272240640a(9) =11985200640a(10) =596981145600
External references
- oeis: A052736