115381

Appears in sequences

• Least j > 1 such that j^2 = (4*n^2 + 2)*(k^2) + (4*n^2 + 2)*k + 1.at n=30A106231
• Formal infinite product representation for the Catalan numbers (A000108) o.g.f. series.at n=11A157161
• Triangle read by rows, 1 <= k <= n: T(n,k) = non-isomorphic colorings of a toroidal n X k grid using exactly five colors under translational symmetry and swappable colors.at n=16A294794