771421

Appears in sequences

• a(1) = 1, a(2) = 2, a(3) = 6; a(n) = 5*a(n-1) - 5*a(n-2) + a(n-3) for n > 3.at n=11A101265
• a(0) = 1, a(1) = 1, a(2) = 2; for n > 2, a(n) = 5*a(n-1) - 5*a(n-2) + a(n-3).at n=12A101879
• Expansion of x*(3*x-1)*(2*x-1) / ( (1-x)*(1+x)*(x^2-4*x+1) ).at n=13A107388
• a(n) = Sum_{k=0..floor(n/2)} 2^(n-2*k) * binomial(2*n-2*k+1,2*k+1).at n=10A387694