23986

Appears in sequences

• Triangle of rooted planar maps up to orientation-preserving isomorphisms.at n=61A046653
• a(n) is the index of A384793(n) in A038618.at n=46A384794
• Indices k such that the determinant of the 3 X 3 Hankel matrix of consecutive primes starting at prime(k) is 0.at n=27A392523