25872

Appears in sequences

• Number of ways of writing n as a sum of 12 squares.at n=5A000145
• Number of nonisomorphic solutions to minimal dominating set on queens' graph Q(n).at n=14A002563
• Triangle of tangent numbers.at n=33A008308
• Expansion of cosh(tan(x)^2).at n=4A009168
• a(n) = 49*(n-1)*(n-2)/2.at n=31A027469
• Coordination sequence for lattice D*_14 (with edges defined by l_1 norm = 1).at n=4A035476
• Number of points of L1 norm 4 in cubic lattice Z^n.at n=14A035598
• Coordination sequence for 14-dimensional cubic lattice.at n=4A035709
• Coordination sequence for C_14 lattice.at n=2A035751
• Coordination sequence for diamond structure D^+_14. (Edges defined by l_1 norm = 1.)at n=4A035883
• Triangle T(n,k) (1 <= k <= n) of tangent numbers, read by rows: T(n,k) = coefficient of x^n/n! in expansion of (tan x)^k/k!.at n=61A059419
• A diagonal of A059419.at n=6A059421
• Triangle read by rows: T(n, k) = [z^k] P(n, z) where P(n, z) = Sum_{k=0..n} binomial(n, k) * Pochhammer(n - k + c, k) * z^k / k! and c = 4.at n=41A062145
• Coefficient triangle of certain polynomials N(4; m,x).at n=42A062264
• Number of nodes in virtual, "optimal", chordal graphs of diameter 4 and degree n+1.at n=25A067956
• Triangle arising from (4,2) tennis ball problem, read by rows.at n=43A078990
• a(n) = binomial(2n+1, n+1)*binomial(n+3, 3).at n=5A085374
• Numbers that can be expressed as the difference of the squares of primes in exactly five distinct ways.at n=27A092001
• Triangle read by rows: T(n, k) = binomial(n, k) * binomial(n+k, n-k).at n=30A092371
• Square of Narayana triangle A001263: View A001263 as a lower triangular matrix. Then the square of that matrix is also lower triangular. Sequence gives this lower triangle, read by rows.at n=30A095801