69014

Appears in sequences

• a(n) = sum of unsigned coefficients in (1+x+x^2-x^3)^n.at n=11A192210
• Expansion of (1-x+2*x^3-sqrt(1-2*x-3*x^2+4*x^3-4*x^4))/(2*x^2).at n=15A229733