73806

Appears in sequences

• a(n) = (5*3^n-2*n-1)/4.at n=10A244762
• Number of (n+2) X (4+2) 0..4 arrays with every consecutive three elements in every row and column not having exactly two distinct values, and in every diagonal and antidiagonal having exactly two distinct values, and new values 0 upwards introduced in row major order.at n=11A252807
• Growth series for group with presentation < S, T : S^2 = T^3 = (S*T)^12 = 1 >.at n=31A299253
• G.f.: Sum_{n>=0} (1 + x^n*(1+x)^n)^n * x^n.at n=25A337745
• Irregular table read by rows: T(n,k) is the number of k-gons, k>=3, formed inside a right triangle by the straight line segments mutually connecting all vertices and points on the two shorter edges whose positions on one edge equal the Farey series of order n while on the other they divide its length into n equal segments.at n=51A359977