a(0) = 1; a(n) = 2 * n * a(n-1) + Sum_{k=0..n-1} binomial(n,k) * a(k).
A343672
a(0) = 1; a(n) = 2 * n * a(n-1) + Sum_{k=0..n-1} binomial(n,k) * a(k).
Terms
- a(0) =1a(1) =3a(2) =19a(3) =181a(4) =2299a(5) =36501a(6) =695427a(7) =15457709a(8) =392672651a(9) =11221959685a(10) =356339728243
External references
- oeis: A343672