149776

Appears in sequences

• Number of conics which pass through 3 points and are bitangent to a general curve of order n.at n=23A060783
• a(n) = floor(sqrt(a(n-1)^2 + a(n-2)^2)), a(1)=1, a(2)=3.at n=48A104803
• a(n) = n*(n + 7)*(n + 14)*(n + 21)*(n + 28)/120.at n=16A264449