Composite numbers n such that juxtaposition of prime factors of n has length 6.

Terms

a(0) =64a(1) =96a(2) =144a(3) =160a(4) =176a(5) =208a(6) =216a(7) =224a(8) =240a(9) =264a(10) =272a(11) =304a(12) =312a(13) =324a(14) =336a(15) =360a(16) =368a(17) =396a(18) =400a(19) =408a(20) =440a(21) =456a(22) =464a(23) =468a(24) =484a(25) =486a(26) =496a(27) =504a(28) =520a(29) =540