Pseudoprimes to base 41.

Terms

a(0) =4a(1) =8a(2) =10a(3) =15a(4) =20a(5) =21a(6) =35a(7) =40a(8) =105a(9) =145a(10) =231a(11) =344a(12) =561a(13) =609a(14) =645a(15) =671a(16) =703a(17) =841a(18) =1065a(19) =1105a(20) =1281a(21) =1387a(22) =1417a(23) =1729a(24) =1885a(25) =1891a(26) =2121a(27) =2465a(28) =2701a(29) =2821