a(n) = exp(-1) * Sum_{k>=0} H_n(k)/k!, where H_n(x) is n-th Hermite polynomial.
A277381
a(n) = exp(-1) * Sum_{k>=0} H_n(k)/k!, where H_n(x) is n-th Hermite polynomial.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =28a(4) =156a(5) =984a(6) =7112a(7) =57488a(8) =508688a(9) =4887840a(10) =50639200a(11) =561416640a(12) =6621963712a(13) =82719611264
External references
- oeis: A277381