457380

Appears in sequences

• Coordination sequence for lattice D*_70 (with edges defined by l_1 norm = 1).at n=3A035820
• Number of degree-n even permutations of order exactly 4.at n=10A051695
• Number of antichains (or order ideals) in the poset 4*m*n or plane partitions with at most m rows and n columns and entries <= 4.at n=48A056940
• Number of antichains (or order ideals) in the poset 4*m*n or plane partitions with at most m rows and n columns and entries <= 4.at n=51A056940
• Triangle arising from solution to a*x = tan x (next row contains non-integral entries).at n=18A059368
• a(n) = binomial(n+4,4)*binomial(n+5,4)*binomial(n+6,4)/75.at n=6A107915
• Triangle of Hankel transforms of binomial(n+k, k).at n=48A120247
• Number of 3 X 6 matrices with elements in 0..n with each row and each column in nondecreasing order. 3,6,n can be permuted, see formula.at n=4A140903
• Number of 4 X 6 matrices with elements in 0..n with each row and each column in nondecreasing order. 4,6,n can be permuted, see formula.at n=3A140904
• Triangle T(n,m) read by rows: T(n,m) = Product_{i=0..5} binomial(n+i,m)/binomial(m+i,m).at n=31A142465
• Triangle T(n,m) read by rows: T(n,m) = Product_{i=0..5} binomial(n+i,m)/binomial(m+i,m).at n=32A142465
• a(n) = number of elements of order n in simple group Alt(11) of order 19958400.at n=3A145822
• a(n) = H(n) * (lcm(1,2,...,n))^2, where H(n) = harmonic numbers (1/1 + 1/2 + ... + 1/n).at n=6A175455
• Expansion of Product_{n>=1} (1 - x^(5*n))/(1 - x^n)^5 in powers of x.at n=14A277212
• Triangle T(i,j) read by rows: Number of plane bipolar orientations with i+1 vertices and j+1 faces.at n=25A296419
• a(n) = n^2*(2*n^2-23).at n=21A370109