873810

Appears in sequences

• Expansion of (1+x)*(1+4*x)/((1-x)*(1-4*x)).at n=9A086462
• Triangle read by rows: T(n,k) = (n+1,k)-th element of (M^4-M)/3, where M is the infinite lower Pascal's triangle matrix, 1<=k<=n.at n=46A096035