62092domain: NAppears in sequencesa(n) = floor(e^(n/e)).at n=30A061481Coefficient of X^2 in expansion of (1 + n*X + n*X^2)^n.at n=18A092365a(n) = n!*b(n) where b(n) = (b(n-2) + b(n-3))/(n*(n-1)), b(0) = b(1) = b(2) = 1.at n=16A123024Number of incongruent restricted disjoint covering systems (IRDCS) of length n.at n=33A123298