Smallest even pseudoprime (>2n+1) in base 2n+1.

Terms

a(0) =4a(1) =286a(2) =124a(3) =16806a(4) =28a(5) =70a(6) =244a(7) =742a(8) =1228a(9) =906a(10) =1852a(11) =154a(12) =28a(13) =286a(14) =52a(15) =66a(16) =496a(17) =442a(18) =66a(19) =1834a(20) =344a(21) =526974a(22) =76a(23) =506a(24) =66a(25) =70a(26) =286a(27) =1266a(28) =2296a(29) =946