1048557

Appears in sequences

• a(n) = 3*a(n-1) - a(n-2) - 3*a(n-3) + 2*a(n-4).at n=19A084173
• a(n) = 2^(n+1) - n.at n=18A095768
• a(n) = 2^(2*n)-(2*n-1).at n=10A100102
• Row sums of triangle A132044.at n=20A132045