65075

Appears in sequences

• a(0) = 0, a(1) = 1; a(n) = n! * [x^n] exp(n*x)*Sum_{k=1..n-1} a(k)*x^k/k!.at n=5A293860
• Number of equivalence classes of 4-binomial complexity for binary words of length n. Or, equivalently, the number of distinct 4-decks of binary words of length n.at n=15A335890