Even pseudoprimes to base 13.

Terms

a(0) =4a(1) =6a(2) =12a(3) =244a(4) =276a(5) =2806a(6) =5028a(7) =10308a(8) =40132a(9) =51118a(10) =115644a(11) =185646a(12) =216492a(13) =237084a(14) =789636a(15) =936046a(16) =941818a(17) =1062876a(18) =1237276a(19) =1469716a(20) =2119002a(21) =2201002a(22) =2410354a(23) =2446426a(24) =3198196a(25) =4319052a(26) =4979316a(27) =5329468a(28) =5496492a(29) =7171876