1593900domain: NAppears in sequencesNumber of labeled pure 2-complexes on n nodes (0-simplexes) with 5 2-simplexes and 8 1-simplexes.at n=20A054559Numbers with prime factorization pqrs^2t^2u^2.at n=6A190391Column 2 of triangle in A331431.at n=20A331434