49720

Appears in sequences

• Reversion of x*(1-x)*(1-x^2)*(1-x^3)/(1-x^6) = x*(1-x)^2/(1-x+x^2).at n=9A109081
• Inverse of Riordan array ((1-x)(1-x^2)(1-x^3)/(1-x^6), x(1-x)(1-x^2)(1-x^3)/(1-x^6)).at n=45A185967
• Number of Motzkin n-paths avoiding odd-numbered steps that are up steps.at n=18A215067