120003

Appears in sequences

• a(n+1)=a(n)+a(n-1) if a(n-1) odd, a(n+1)=a(n)+a(n-1)/2 if a(n-1) even.at n=28A078696
• Expansion of 1 / sqrt((1-x)^6 - 4*x^2).at n=9A392642