-206098

Appears in sequences

• Expansion of (1-x+sqrt(1-6x+x^2))/2 in powers of x.at n=10A085403
• Expansion of (1 + x + sqrt(1 - 6*x + x^2))/2 in powers of x.at n=10A086456
• Riordan array ((1-x+sqrt(1+6*x+x^2))/2, (sqrt(1+6*x+x^2)-x-1)/2).at n=55A112477
• Expansion of (1 + x + sqrt(1 + 6*x + x^2))/2.at n=10A112478
• Riordan array ((1-x+sqrt(1-6x+x^2))/2, (1+x-sqrt(1-6x+x^2))/4).at n=55A117354