81729648000
domain: N
Appears in sequences
- a(n) = (2n)!/2^n.at n=8A000680
- Denominators of expansion of exp x / sin x.at n=16A007451
- Expand cos x / exp x and invert nonzero coefficients.at n=16A007452
- Expansion of E.g.f.: (1 + x)/(1 + x + x^2/2).at n=16A009014
- a(n) = (2^n)!/4^n, with a(1)=1, a(2)=2.at n=3A046856
- Denominators of Taylor series for exp(x)*cos(x).at n=16A046981
- (n-1)!/n or 0 if n does not divide (n-1)!.at n=15A055637
- a(n) = (n^2)! / (n^n).at n=4A062782
- Denominators in power series for cos(x)*cosh(x).at n=4A067630
- n!/((n+1)*(n+2)*...*(n+k)) where k is largest value that gives an integer quotient.at n=14A068819
- Denominators of coefficients of expansion of sinh(x)/sin(x) (even powers only).at n=8A069854
- a(n) = (8n)!/n!^8.at n=2A071550
- Denominators used in the computation of the column sequences of array A078739 ((2,2)-Stirling2).at n=16A089512
- a(n) = n! / 2^floor(n/2).at n=16A090932
- a(n) = numerator(n!/n^2).at n=15A092043
- a(n) is n! divided by LCM of all composite numbers k such that n < k < prime(r) where prime(r-1)< n.at n=14A108889
- n!/(n^2) when an integer.at n=8A129906
- Partial sums of A156832.at n=15A145499
- Number of 2*n X n 0..1 arrays with row sums 7 and column sums 14.at n=7A172548
- Number of 8*n X 16 0..1 arrays with row sums 2 and column sums n.at n=0A172611