98238

Appears in sequences

• Triangle T, read by rows, where T(n,k) = Sum_{j=1..n-k-1} [T^j](n-1,k) with T(n+1,n) = n+1 and T(n,n)=0 for n>=0, where T^n denotes the n-th matrix power of T.at n=47A132623
• Expansion of 1/( (1 + x)^2 * (1 - x^2*(1 + x)^2) ).at n=28A375373
• a(n) is the arithmetic mean of all multiplicative arithmetic functions f(n) with f(p^e) returning a monic degree 3 Littlewood polynomial of p.at n=41A386704