91869970

Appears in sequences

• Number of multiples of 3 in 0..2^n-1 with an even sum of base-2 digits.at n=29A036557
• Expansion of (1 - 5*x + 5*x^2)/((1-x)*(1-3*x)*(1-4*x)).at n=14A085282
• a(n) = Sum_{2*i+3*j=n, 0<=i<=n, 0<=j<=n} n!/( (2*i)!*(3*j)! ).at n=29A094715
• Expansion of x^2*(1-x)^3/((1-2*x)*(1-x+x^2)*(1-3*x+3x^2)).at n=29A227430