44597domain: NAppears in sequencesExpansion of chi(x)^10 / phi(x)^4 in powers of x where phi(), chi() are Ramanujan theta functions.at n=20A002512Greatest integer whose square root is less than or equal to Sum_{j=0..n} sqrt(j).at n=46A338277Number of 4-cycles in the n-cycle complement and (n+1)-wheel complement graph.at n=25A367985