108972864000
domain: N
Appears in sequences
- Expansion of e.g.f. 1/((1-2*x)*(1-x^2)).at n=11A052600
- E.g.f.: x^3*log(1/(1-x)).at n=15A052759
- Reduced root factorial of n: product of the smallest integer root of numbers from 1 to n.at n=16A068625
- For n > 0, 0 <= k <= n^2, T(n,k) is the number of rotationally and reflectively distinct n X n arrays that contain the numbers 1 through k once each and n^2-k zeros.at n=29A087074
- a(n) = denominator of (Sum_{k=1..n} H(2k)(2k)!/(k!(k+n+1)!) = Sum_{k=0..n-1} H(n-k)(2k)!/ (k!(k+n+1)!)), where H(k) = Sum_{j=1..k} 1/j (i.e., the k-th harmonic number).at n=6A124236
- Denominators of n-th approximation of factorial (also called harmonic) expansion of Pi.at n=14A131446
- a(n) is the number of ways to paint the 2^n cells of dimension n-1 that bound a regular convex n-orthoplex polytope using exactly 2^n colors where n is the dimension of Euclidean space.at n=3A317251
- The number of ways to paint the cells of the six convex regular 4-polytopes using exactly n colors where n is the number of cells of each 4-polytope.at n=2A317978
- Triangle read by rows: T(n,k) is the number of oriented colorings of the facets of a regular n-dimensional orthoplex using exactly k colors. Row n has 2^n columns.at n=29A325016