30240000

Appears in sequences

• Largest number in n-th row of triangle A019538.at n=10A002869
• Triangle of numbers T(n,k) = k!*Stirling2(n,k) read by rows (n >= 1, 1 <= k <= n).at n=52A019538
• a(n) = n*(3*n+1)*(n+2)!/24.at n=8A037960
• T(n, k) = Sum_{j=0..n-k} (-1)^j*binomial(n - k + 1, j)*(n - k + 1 - j)^n. Triangle read by rows, T(n, k) for 1 <= k <= n.at n=47A090582
• Triangle read by rows: coefficients of polynomials E(n,x) related to partitions with parts occurring at most thrice.at n=44A098494
• Triangle T(n,k) of numbers of connected (unicyclic) graphs with unique cycle of length k (3<=k<=n), on n labeled nodes.at n=32A098909
• a(1) = 1; for n>1, a(n) = least multiple of a(n-1) such that the termwise concatenation of a(n), a(n-1),...a(2), a(1) is prime.at n=9A111674
• Number of surjections from an n-element set to an eight-element set.at n=2A133068
• Triangle read by rows: T(n,k) (n>=1, 3<=k<=n+2) is the number of k-sequences of balls colored with n colors such that exactly two balls are of a color seen previously in the sequence.at n=35A281944
• Expansion of e.g.f. log(1 + Sum_{k>=1} (k+1)*(k+2)/6 * x^k).at n=11A308499
• a(n) = (2*n)^(n-2)*(2*n)!/n!.at n=4A375105