75600

Appears in sequences

• Coefficient of H_2 when expressing x^{2n} in terms of Hermite polynomials H_m.at n=4A001814
• Joffe's central differences of 0, A241171(n,n-1).at n=4A002456
• Theta series of E_6 lattice.at n=29A004007
• Ratios of successive terms are 1,1,2,3,3,4,5,5,6,7,7,...at n=10A004395
• Number of walks on square lattice.at n=20A005565
• Chernoff sequence: a(n) = Product_{k=1..n} prime(k)^(n-k+1).at n=4A006939
• a(n) = (2n+1)*n!.at n=7A007680
• Triangle of D'Arcais numbers.at n=28A008298
• Number of labeled connected graphs with n nodes and 3 cutpoints.at n=2A013925
• Numbers k such that sigma(k) >= 4*k.at n=7A023198
• a(n) = (n-1)! * sigma(n).at n=7A038048
• Denominators of expansion of tan(sin(x)) - sin(tan(x)).at n=5A045689
• Triangle inverse to that in A046899.at n=52A046900
• Numbers n such that A048767(n) = n.at n=38A048768
• Triangle read by rows. A generalization of unsigned Lah numbers, called L[4,1].at n=16A048854
• Number of n X n (real) {0,1}-matrices having determinant A003432(n).at n=7A051752
• Expansion of e.g.f. 1/((1-2*x^2)*(1-x)).at n=7A052634
• A simple context-free grammar in a labeled universe: labeled version of A052706.at n=6A052729
• Expansion of e.g.f.: -x^2*(log(1-x))^3.at n=8A052765
• a(n) = n! * number of partitions of n.at n=7A053529