40512

Appears in sequences

• Expansion of 1/theta_4(q)^2 in powers of q.at n=14A001934
• Expansion of 1/theta_3(q)^2 in powers of q.at n=14A004403
• Number of essentially different ways of arranging numbers 1 through 2n around a circle so that sum of each pair of adjacent numbers is prime.at n=7A051252
• Number of rooted trees with n nodes and 3 leaves.at n=35A055278
• Number of (n+2) X 9 0..2 matrices with each 3 X 3 subblock idempotent.at n=14A224605
• Triangle T(n, k) = Number of ways to choose k points from an n X n X n triangular grid so that no three of them form a 2 X 2 X 2 subtriangle. Triangle T read by rows.at n=39A234251
• a(n) is the number of rooted 6-regular maps with n vertices on the projective plane.at n=2A322930