Expansion of e.g.f. Product_{k>=1} 1 / (1 - x^k/k!)^2.
A371312
Expansion of e.g.f. Product_{k>=1} 1 / (1 - x^k/k!)^2.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =38a(4) =228a(5) =1562a(6) =12386a(7) =109286a(8) =1073988a(9) =11545994a(10) =135393438a(11) =1714890806a(12) =23380747506a(13) =341014477390
External references
- oeis: A371312