60216

Appears in sequences

• Generalized Stirling numbers, [n+5,5]_4.at n=5A001716
• Number of permutations of length n within distance 3 of a fixed permutation.at n=11A002526
• E..g.f. exp(tanh(x)/exp(x)).at n=9A009276
• a(n) = T(2n,n-1), where T is the array defined in A024996.at n=7A026076
• A triangle of generalized Stirling numbers: sum of consecutive terms in the harmonic sequence multiplied by the product of their denominators.at n=48A067176
• Expansion of (1+x^4*C)*C, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.at n=11A071742
• Third column of A071223.at n=21A087645
• Triangle read by rows: for 0 <= k < n, a(n, k) is the sum of the products of all subsets of {n-k, n-k+1, ..., n} with k members.at n=41A093905
• Array read by descending antidiagonals: A(n, k) = (n + 1)! * H(k, n + 1), where H(n, k) is a higher-order harmonic number, H(0, k) = 1/k and H(n, k) = Sum_{j=1..k} H(n-1, j), for 0 <= k <= n.at n=50A105954
• Unsigned 4-Stirling numbers of the first kind.at n=22A143493
• Triangle generated by the asymptotic expansions of the E(x,m=2,n).at n=39A165674
• Triangle read by rows. T(n, k) = (n - k + 1)! * H(k, n - k), where H are the hyperharmonic numbers. For 0 <= k <= n.at n=49A165675
• Sixth right hand column of triangle A165674.at n=3A165678
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f. -log(1 - x)/(1 - x)^k.at n=61A292717
• Index of first occurrence of n in A349325.at n=28A350278
• Triangle of generalized Stirling numbers.at n=30A376582