5360256

Appears in sequences

• Triangle T(n,k) of arctangent numbers: expansion of arctan(x)^n/n!.at n=31A008309
• Scaled coefficients of (arctanh x)^3.at n=4A049214
• Triangle T(n,k) of arctangent numbers: expansion of arctan(x)^n/n!.at n=57A049218