111878

Appears in sequences

• a(n) = number of ks that make primorial P(n)/A019565(k)-A019565(k) prime.at n=19A103788
• Constant term of the reduction by x^2->x+1 of the polynomial p(n,x) defined at Comments.at n=17A193008
• Number of length n+3 0..3 arrays with no four elements in a row with pattern aabb (possibly a=b) and new values 0..3 introduced in 0..3 order.at n=7A242544
• T(n,k)=Number of length n+3 0..k arrays with no four elements in a row with pattern aabb (possibly a=b) and new values 0..k introduced in 0..k order.at n=52A242549