Composite numbers k such that Pell(k) == -1 (mod k).

Terms

a(0) =741a(1) =3827a(2) =11395a(3) =13067a(4) =27971a(5) =35459a(6) =39059a(7) =84587a(8) =92833a(9) =117739a(10) =134579a(11) =134945a(12) =155819a(13) =177497a(14) =189419a(15) =332949a(16) =382771a(17) =437579a(18) =469699a(19) =473891a(20) =548627a(21) =600059a(22) =632269a(23) =643259a(24) =656083a(25) =677379a(26) =724883a(27) =783579a(28) =828827a(29) =895299