List of pairs of consecutive numbers each with 4 divisors (duplicates removed).

Terms

a(0) =14a(1) =15a(2) =21a(3) =22a(4) =26a(5) =27a(6) =33a(7) =34a(8) =35a(9) =38a(10) =39a(11) =57a(12) =58a(13) =85a(14) =86a(15) =87a(16) =93a(17) =94a(18) =95a(19) =118a(20) =119a(21) =122a(22) =123a(23) =133a(24) =134a(25) =141a(26) =142a(27) =143a(28) =145a(29) =146