152000domain: NAppears in sequencesExpansion of e.g.f. exp(x + tan(x)).at n=9A009284a(n) = n^4 - n^3.at n=20A085537a(n) = n*(n + 1)^3.at n=19A085540Sum of even integers <= n times the sum of odd integers <= n.at n=39A330520a(n) = (6*n+1) * (2*n)!^3 / n!^6.at n=3A376228