Expansion of Sum_{k>=0} k! * x^k * (1 + x)^(k+1).
A346550
Expansion of Sum_{k>=0} k! * x^k * (1 + x)^(k+1).
Terms
- a(0) =1a(1) =2a(2) =4a(3) =13a(4) =54a(5) =278a(6) =1704a(7) =12126a(8) =98280a(9) =893904a(10) =9017280a(11) =99918120a(12) =1206500400a(13) =15768729360a(14) =221792780160
External references
- oeis: A346550