Lucas-Carmichael numbers: squarefree composite numbers k such that p | k => p+1 | k+1.

Terms

a(0) =399a(1) =935a(2) =2015a(3) =2915a(4) =4991a(5) =5719a(6) =7055a(7) =8855a(8) =12719a(9) =18095a(10) =20705a(11) =20999a(12) =22847a(13) =29315a(14) =31535a(15) =46079a(16) =51359a(17) =60059a(18) =63503a(19) =67199a(20) =73535a(21) =76751a(22) =80189a(23) =81719a(24) =88559a(25) =90287a(26) =104663a(27) =117215a(28) =120581a(29) =147455