51776domain: NAppears in sequencesExpansion of e.g.f.: (1+x)*exp(5*x)*cosh(x).at n=6A082309Number of n X 3 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 1 0 vertically.at n=31A207106Number of subsets of {1..n} containing n such that every subset has a different sum.at n=38A325866