39750domain: NAppears in sequencesa(n) = floor( n*(n-1)*(n-2)*(n-3)/28 ).at n=34A011938a(n) = 5*(n+1)*(9*n+4).at n=29A304507Numbers k that are divisible by sum(pi)^2+sum(ei) where k=p1^e1*...*pj^ej with pi primes.at n=35A321456