79200

Appears in sequences

• Number of invertible 2 X 2 matrices mod n.at n=21A000252
• Coefficients for numerical differentiation.at n=5A002702
• Values of phi(k) when phi(k) = phi(k+1).at n=40A003275
• Number of (binary) heaps on n elements.at n=12A056971
• Low-temperature susceptibility expansion for Kagome net (Potts model, q=3).at n=9A057399
• Number of conjugacy classes in the group GL(3,Z_n).at n=43A086768
• Numbers containing squares of Pythagorean triples in their divisor set.at n=21A096472
• Largest achievable determinant of a 4 X 4 matrix whose elements are the 16 consecutive integers n-15,...,n.at n=16A097696
• Structured octagonal prism numbers.at n=29A100176
• Expansion of x/(1-5*x+7*x^2-5*x^3+x^4).at n=10A104630
• Denominator of 3*Sum_{i=1..n} 1/(i^2*C(2*i,i)).at n=6A112094
• Table read by rows. Coefficients of Lommel polynomials L(n, m, z) = (Gamma(n + m) / (Gamma(n) * (z/2)^m)) * hypergeom([(1 - m)/2, -m/2], [n, -m, 1 - n - m], z^2) for n = m and descending powers.at n=28A171636
• Divide integers 1..n into two sets, minimizing the difference of their products. This sequence is the larger product.at n=12A200744
• Number of (w,x,y,z) with all terms in {1,...,n} and w^3>=x^3+y^3+z^3.at n=26A212100
• Number of length n+2 0..5 arrays with the medians of every three consecutive terms nondecreasing.at n=4A250137
• T(n,k)=Number of length n+2 0..k arrays with the medians of every three consecutive terms nondecreasing.at n=40A250140
• Number of length 5+2 0..n arrays with the medians of every three consecutive terms nondecreasing.at n=4A250144
• Highly composite numbers of class 4 (see comment in A275239).at n=23A275242
• Numbers n such that phi(n) * tau(n) divides n^2, but neither tau(n) nor phi(n) divides n.at n=9A287800
• a(n) = Product_{i=1..n} floor(5*i/3).at n=6A319950