106820

Appears in sequences

• Smallest multiple of the n-th prime such that every partial sum is a square.at n=28A085039
• a(n) is the number of rooted 5-regular maps with 2n vertices on the projective plane.at n=1A322929
• E.g.f. satisfies: A(x) = 1/(1 - x * A(x)^2)^A(x).at n=5A356914