Q(sqrt(n)) has class number 3.

Terms

a(0) =79a(1) =142a(2) =223a(3) =229a(4) =254a(5) =257a(6) =321a(7) =326a(8) =359a(9) =443a(10) =469a(11) =473a(12) =659a(13) =733a(14) =761a(15) =839a(16) =934a(17) =993a(18) =1091a(19) =1101a(20) =1171a(21) =1223a(22) =1229a(23) =1257a(24) =1367a(25) =1373a(26) =1478a(27) =1489a(28) =1509a(29) =1523