Lucas-Carmichael numbers of the form k^2 - 1.

Terms

a(0) =399a(1) =2915a(2) =7055a(3) =63503a(4) =147455a(5) =1587599a(6) =1710863a(7) =2249999a(8) =2924099a(9) =6656399a(10) =9486399a(11) =14288399a(12) =19289663a(13) =25603599a(14) =26936099a(15) =28451555a(16) =31270463a(17) =32148899a(18) =45158399a(19) =49280399a(20) =71368703a(21) =91011599a(22) =105884099a(23) =111513599a(24) =144288143a(25) =146894399a(26) =150405695a(27) =152028899a(28) =175827599