70073640domain: NAppears in sequencesa(n) = p(n)/p(n-1), where p(n) = ( floor(n*log(n)) / Product_{j=2..pi(floor(n*log(n)))} prime(j) )!.at n=26A088301Numbers that are the product of 4 consecutive positive numbers and the product of 2 nontrivial oblong numbers.at n=7A276161