-90930

Appears in sequences

• Expansion of g.f. -2*x/(1 - 5*x + 2*x^2).at n=8A106709
• G.f.: A(x,y) = Sum_{n>=0} x^n * Product_{k=1..n} (k + x*y) / (1 + k*x*y), as a triangle read by rows.at n=26A231171