-2974

Appears in sequences

• a(n) = -a(n-1) - a(n-2) + a(n-3), a(0)=0, a(1)=0, a(2)=1.at n=29A057597
• a(n)=1+(1/12)(n*(n+1)*(n+3)*(4-n)).at n=14A080260
• Matrix inverse of triangle A099602, read by rows, where row n of A099602 equals the inverse binomial transform of column n of the triangle of trinomial coefficients (A027907).at n=47A104495
• a(n) = -n^3 + 7*n^2 - 5*n + 1.at n=17A161708
• Expansion of 1 / (1 + Sum_{i>=1, j>=1} x^(i*prime(j))).at n=57A327800