162996

Appears in sequences

• a(n) = Sum_{k=1..n-1} k^2*sigma(k)*sigma(n-k).at n=16A000477
• a(n) = n! * [x^n] exp((n+2)*x)*(BesselI(0,2*x) - BesselI(1,2*x)).at n=6A292632