1558435125

Appears in sequences

• Carlitz-Riordan q-Catalan numbers (recurrence version) for q=4.at n=6A015085
• Triangle T(n,k), 0 <= k <= n, composed of k-Catalan numbers.at n=59A090182
• Square array A(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of continued fraction 1/(1 - x/(1 - k*x/(1 - k^2*x/(1 - k^3*x/(1 - k^4*x/(1 - ...)))))).at n=61A290759