84159

Appears in sequences

• Irregular triangle read by rows: T(n,k) (n >= 2) is the number of cubic graphs on 2n nodes with diameter k.at n=64A204329
• Numbers k such that (22*10^k - 19)/3 is prime.at n=26A282139
• The number of vertically balanced self-avoiding walks of length n on the upper half-plane of a 2D square lattice where the nodes and connecting rods have equal mass.at n=12A337860
• a(n) = Sum_{k=0..floor(n/4)} 2^k * 3^(n-3*k) * binomial(n-2*k,k) * binomial(n-3*k,k).at n=9A390830