Numbers of the form n^2+1 such that 3^(m+3)==9 (mod m) where m=n^4-1.

Terms

a(0) =5a(1) =17a(2) =37a(3) =101a(4) =257a(5) =1297a(6) =4357a(7) =14401a(8) =44101a(9) =65537a(10) =828101a(11) =933157a(12) =8122501a(13) =8386817a(14) =12362257a(15) =41990401a(16) =121220101a(17) =157402117a(18) =223502501a(19) =318622501a(20) =378146917a(21) =506700101a(22) =684345601a(23) =702038017