38701domain: NAppears in sequencesNumber of inequivalent ways to color vertices of a regular tetrahedron using <= n colors.at n=26A006008Strong pseudoprimes to base 89.at n=22A020315a(n) = n*(14*n^2 - 21*n + 13)/6.at n=26A071229Expansion of Product_{k>=1} (1 - x^(7*k))^8/(1 - x^k)^9 in powers of x.at n=7A282920