526869

Appears in sequences

• Simple triangulations of a disk: column 4 of square array in A210664.at n=18A004305
• Expansion of 1/(1 - x/(1 - x^5/(1 - x^14/(1 - x^30/(1 - x^55/(1 - ... - x^(k*(k+1)*(2*k+1)/6)/(1 - ...))))))), a continued fraction.at n=50A295073