340024domain: NAppears in sequencesExpansion of e.g.f. exp(x)*(tan x + sec x)^3.at n=8A292759Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f. exp(x)*(sec(x) + tan(x))^k.at n=74A322268