34520

Appears in sequences

• Triangle of rooted planar maps, read by rows.at n=40A046652
• Triangle read by rows: T(n,k) is the number of nonseparable planar maps with 2*n+1 edges and a fixed outer face of 2*k edges which are invariant under a rotation of a 1/2 turn.at n=40A091665
• McKay-Thompson series of class 8B for the Monster group.at n=9A112142
• Triangular array counting derangements by number of descents.at n=32A219836
• Expansion of q^(-1) * (phi(q^2) * phi(-q) / psi(-q^2)^2)^2 in powers of q where phi(), psi() are Ramanujan theta functions.at n=18A233458
• Number of length 3 1..(n+1) arrays with every leading partial sum divisible by 2, 3, 5 or 7.at n=41A258634
• Numbers k such that Bernoulli number B_{k} has denominator 13530.at n=24A295587