-15310

Appears in sequences

• Inverse of the Delannoy triangle.at n=37A103136
• Second column of inverse of Delannoy triangle.at n=8A103138
• Riordan array ((1-x+sqrt(1+6*x+x^2))/2, (sqrt(1+6*x+x^2)-x-1)/2).at n=47A112477