G.f.: Sum_{n>=0} x^n / ( (1+x)^(n+1) * (1 - 2*(n+1)*x) ).
A245373
G.f.: Sum_{n>=0} x^n / ( (1+x)^(n+1) * (1 - 2*(n+1)*x) ).
Terms
- a(0) =1a(1) =2a(2) =6a(3) =20a(4) =80a(5) =368a(6) =1904a(7) =10880a(8) =67904a(9) =459008a(10) =3336704a(11) =25925120a(12) =214175744a(13) =1873092608a(14) =17276401664a(15) =167504076800
External references
- oeis: A245373