-1545

Appears in sequences

• Expansion of e.g.f: arcsinh(arcsin(x)+log(x+1))=2*x-1/2!*x^2-5/3!*x^3+18/4!*x^4+171/5!*x^5...at n=6A012905
• Expansion of -1/(1 - x + x^2 - x^3 + x^4 + x^6).at n=49A125629
• a(n) = 3*a(n-2) - a(n-3), with a(0)=0, a(1)=-3, and a(2)=6.at n=11A215666
• Expansion of Product_{k>=1} (1-x^(k^2))^(k^2).at n=42A291696
• a(0) = 1; a(n) = Sum_{k=0..floor((n-1)/2)} (-2)^k * a(k) * a(n-2*k-1).at n=15A352009