23291268

Appears in sequences

• Number of n X 6 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically.at n=20A207066
• Triangle read by rows: T(n,k) = binomial(2*n,k)*Stirling2(2*n-k,n).at n=31A226703