1816333805

Appears in sequences

• q-Catalan numbers (binomial version) for q=2.at n=6A015030
• a(n) = A135951(n) /[(2^(n+1)-1) * 2^(n*(n-1)/2)].at n=6A136097
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where A(n,k) is the n-th q-Catalan number for q=k.at n=42A384437