163121
domain: N
Appears in sequences
- a(n) = 1/exp(1) * Sum_{k>=0} (k+n)!^2 / k!^3.at n=4A069948
- a(n) = (1/e) * Sum_{k>=0} ((k+4)!/k!)^(n-1)/k!.at n=3A071379
- Triangle of certain generalized Bell numbers.at n=24A090210
- Number of set partitions of unique elements from an n X 4 matrix where elements from the same row may not be in the same partition.at n=2A283153