150118

Appears in sequences

• G.f. x^4*(2*x^2-1)/( (x^2-1)*(x^2+x-1)*(2*x^3-2*x^2+2*x-1) ).at n=26A175378
• Expansion of Product_{k>=1} ((1+x^k)/(1-x^k))^(3*k).at n=9A261389