-3772

Appears in sequences

• Generalized sum of divisors function.at n=44A002130
• Hankel transform of expansion of 1/c(x)^3, c(x) the g.f. of A000108.at n=21A144701
• a(n) = (-1)^n*n*(n+1)*(2*n-5)/6.at n=22A167386
• Expansion of (1+4*x+x^2) / ((1-x)^3*(1+x)^4).at n=44A229834
• Expansion of sqrt((1-8*x+sqrt(1+64*x^2)) / (2 * (1+64*x^2))).at n=5A337396
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of sqrt((1-(k+4)*x+sqrt(1+2*(k-4)*x+((k+4)*x)^2)) / (2 * (1+2*(k-4)*x+((k+4)*x)^2))).at n=50A337419