319334400
domain: N
Appears in sequences
- Number of pairs of sequences of cardinality at least 2.at n=11A052520
- Number of integers less than A000108(n) relatively prime to A000108(n).at n=19A062624
- Triangle read by rows: T(n,k) = (n + 1)*(n + k)!.at n=32A143085
- a(n) = 8 * n!.at n=10A159038
- G.f.: Sum_{n>=0} (n+2)^n * x^n / (1 + (n+2)*x)^n.at n=11A229039
- Expansion of e.g.f. Sum_{k>=1} tanh(x^k).at n=11A330504
- Expansion of e.g.f. Sum_{k>=1} arctan(x^k).at n=11A330511
- Number of cyclic diagonal Latin squares of order 2n+1.at n=5A338562
- Number of pandiagonal Latin squares of order 2n+1.at n=5A342306
- Number of horizontally or vertically semicyclic diagonal Latin squares of order 2n+1.at n=5A342990
- Distinct values of the least common multiple of initial segments of numbers of least prime signature (A025487).at n=19A343458
- Smaller of two successive terms of A025487 that have an equal number of divisors.at n=17A375196
- E.g.f. satisfies A(x) = exp(x^3 * (1 + x) * A(x)).at n=11A376518