Pseudoprimes to base 73.

Terms

a(0) =4a(1) =6a(2) =8a(3) =9a(4) =12a(5) =18a(6) =24a(7) =36a(8) =45a(9) =65a(10) =72a(11) =111a(12) =117a(13) =185a(14) =205a(15) =259a(16) =276a(17) =333a(18) =369a(19) =481a(20) =533a(21) =561a(22) =585a(23) =703a(24) =1105a(25) =1221a(26) =1441a(27) =1517a(28) =1665a(29) =1729