-2508

Appears in sequences

• Riordan array (-sqrt(4*x^2+8*x+1)+2*x+2, (sqrt(4*x^2+8*x+1)-2*x-1)/2).at n=51A121575
• Expansion of f(x)^12 in powers of x where f() is a Ramanujan theta function.at n=37A209676
• Series reversion of the g.f. of A228862.at n=15A228863