Strong pseudoprimes to base 7.

Terms

a(0) =25a(1) =325a(2) =703a(3) =2101a(4) =2353a(5) =4525a(6) =11041a(7) =14089a(8) =20197a(9) =29857a(10) =29891a(11) =39331a(12) =49241a(13) =58825a(14) =64681a(15) =76627a(16) =78937a(17) =79381a(18) =87673a(19) =88399a(20) =88831a(21) =102943a(22) =109061a(23) =137257a(24) =144901a(25) =149171a(26) =173951a(27) =178709a(28) =188191a(29) =197633