123929

Appears in sequences

• Triangular array read by rows: T(n,1) = T(n,n) = 1, T(n,k) = 3*T(n-1,k-1) + 2*T(n-1,k).at n=51A119725
• a(n) = (n/4)*(n^3+2*n^2+5*n+8).at n=26A334694