-27297738

Appears in sequences

• Expansion of (1-x+sqrt(1-6x+x^2))/2 in powers of x.at n=13A085403
• Expansion of (1 + x + sqrt(1 - 6*x + x^2))/2 in powers of x.at n=13A086456
• First column of inverse of Delannoy triangle.at n=13A103137