367927

Appears in sequences

• Number of 4-level labeled linear rooted trees with n leaves.at n=6A050352
• Sum k!, where sum is over positive integers k <= n with gcd(k,n) = 1.at n=9A057795
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, 0), (1, 0, -1), (1, 1, -1), (1, 1, 1)}.at n=10A149679
• E.g.f.: (18 - 17*cosh(x)) / (25 - 24*cosh(x)).at n=3A250914
• Generalized Fubini numbers. Square array read by ascending antidiagonals, A(n,k) = 1 + k*(Sum_{j=1..n-1} C(n,j)*A(j,k)); n>=0 and k>=0.at n=48A257565