4869849600

Appears in sequences

• The number of permutations of n cards in which 4 will be the next hit after 2.at n=11A018932
• a(n) = (n^2 + 1)*n!.at n=11A082042
• E.g.f. satisfies A(x) = exp(x^3 * A(x)^3 / (1 - x)).at n=11A376495