-2924

Appears in sequences

• Triangle read by rows: T(n,k) = coefficient of x^k in the polynomial p[n,x] defined by p[0,x]=1, p[1,x]=1+x and p[n,x]=(1+x)(2-x)(3-x)...(n-x) for n >= 2 (0 <= k <= n).at n=30A123361
• a(n) = 1 + 3*n - 2*n^2.at n=39A168244
• a(n) = sum_{k = 0..n-1} (-1)^k*C(2*n-1,k)*C(n-1,k), n>0.at n=12A252355
• L.g.f.: Sum_{n>=1} (x - x^(2*n-1))^(2*n-1) / (2*n-1).at n=32A293597
• Expansion of Product_{i>=1, j>=1, k>=1} (1 - x^(i*j*k)).at n=38A319359