Pandigital numbers with exactly 4 prime factors (with multiplicity).

Terms

a(0) =1023456987a(1) =1023458679a(2) =1023458967a(3) =1023465798a(4) =1023465897a(5) =1023465978a(6) =1023465987a(7) =1023467589a(8) =1023467859a(9) =1023468579a(10) =1023468597a(11) =1023468795a(12) =1023469758a(13) =1023478569a(14) =1023479586a(15) =1023479865a(16) =1023485967a(17) =1023486579a(18) =1023486957a(19) =1023487659a(20) =1023487965a(21) =1023489657a(22) =1023495678