75019

Appears in sequences

• Expansion of g.f. (x^2+x+1)*(2*x^2+2*x+1)*(x-1)^2/((1-x^2-2*x^3)*(x^4+1)).at n=30A107850
• Row sums of A099884, the XOR difference triangle of the powers of 2.at n=12A158875
• a(n) = Sum_{k=0..n} (k-1)^(k-1) * binomial(n,k).at n=7A360193