1625702400

Appears in sequences

• a(n) = (n!)^2.at n=8A001044
• Triangle of central factorial numbers |t(2n,2n-2k)| read by rows.at n=44A008955
• Multiply successively by 1,1,2,2,3,3,4,4,..., n >= 1, a(0) = 1.at n=16A010551
• Triangle of generalized Stirling numbers.at n=35A061692
• Number of permutations of degree n with greatest sum of distances.at n=16A062870
• A092186(n)/2.at n=14A092187
• Largest squared factorial dividing n!.at n=16A105350
• Largest squared factorial dividing n!.at n=17A105350
• a(n) = permanent of an n X n matrix M of zeros and ones defined as follows: if we concatenate the rows of M to form a vector v of length n^2, v_i = 1 only if i = 1 or a multiple of 2.at n=16A110947
• Column 0 of the matrix logarithm (A111941) of triangle A111940, which shifts columns left and up under matrix inverse; these terms are the result of multiplying the element in row n by n!.at n=17A111942
• a(n) = ((2n)!)^2.at n=4A134372
• A129065 with v=x instead of v=1: recursive polynomial coefficient triangle.at n=35A136452
• Triangle T(n, k) = n! * StirlingS1(n, k)/binomial(n, k), read by rows.at n=36A142473
• Triangle read by rows: T(n,k) = n!*k!, 0 <= k <= n.at n=44A143216
• List of pairs: {n*(n + 1)*(2*n + 1)/6, (n!)^2}.at n=17A154225
• Triangle of characteristic polynomials, see Mathematica code.at n=36A158390
• Triangle of characteristic polynomials, see Mathematica code.at n=36A158391
• Triangle of polynomial coefficients related to 3F2([1,n+1,n+1],[n+2,n+2],z).at n=21A162990
• n! / (Product{k|n} k$). Here '$' denotes the swinging factorial function (A056040).at n=17A163089
• Triangle, read by rows, T(n, k) = (-1)^n*(n!/k!)^2*binomial(n-1, k-1).at n=28A169656