-6688

Appears in sequences

• Expansion of (1 - x + 2*x^2) / (1 - x^3 + x^4).at n=54A110062
• Expansion of (2*x+1)*(4*x^2+8*x+1) / ((x-1)*(3*x^2+3*x+1)*(2*x^3+2*x^2+4*x+1)).at n=7A110686
• Expansion of q * (phi(-q^2) * psi(-q)^2)^4 in powers of q where phi(), psi() are Ramanujan theta functions.at n=38A225912
• a(0) = 1; a(n) = Sum_{k=0..n-1} (-1)^k * (k+1) * a(k) * a(n-k-1).at n=7A376134