980179200

Appears in sequences

• Number of planar embedded labeled trees with n nodes: (2*n-3)!/(n-1)! for n >= 2, a(1) = 1.at n=9A006963
• Triangle read by rows: T(n, k) = [x^k] x*Pochhammer(n + x, n)/(n + x).at n=36A038455
• a(n) = (n+9)!/9!.at n=8A049398
• Generalized Stirling number triangle of first kind.at n=36A051523
• Triangle a(n,k) read by rows n which contain columns k=1,2,..,n, where each entry is the product of numbers (k-1)*n-T(k-2)+1 through k*n-T(k-1).at n=37A093447
• Triangle read by rows: T(n,d) = (n!/d!)*(n+1)*binomial(2n-d+1,n+1)/(n-d+1) (0 <= d <= n).at n=36A123225
• a(n) = n!/ceiling(n/2)!.at n=17A205825
• Product of 8 consecutive integers. a(n) = RisingFactorial(n, 8).at n=10A239035
• Number of permutations of [n] beginning with at least floor(n/2) ascents.at n=17A262033
• Triangle read by rows, T(n,k) = (n+k+1)! / ([(n-k)/2]! * [(n+k+2)/2]!) with [.] the floor function, for n>=0 and 0<=k<=n.at n=44A275212
• Expansion of the exponential generating function (1/2)*(1 + 4*x)*(1 - (1 + 4*x)^(-3/2))/x.at n=8A292221
• Coefficient triangle of generalized Laguerre polynomials n!*L(n,n+1,x) (rising powers of x).at n=36A343890
• a(n) = Product_{k=0..2*n-1} (3*n+k-2).at n=4A384300