319068domain: NAppears in sequencesExpansion of e.g.f. 1 / (1 - x^2 * exp(x) / 2).at n=9A346888Square array T(n,k), n >= 0, k >= 1, read by antidiagonals, where column k is the expansion of e.g.f. 1/(1 - x^k * exp(x) / k!).at n=64A351703