Positive integers n such that 2^(n-3) == -1 (mod n).

Terms

a(0) =1a(1) =5a(2) =4553a(3) =46777a(4) =82505a(5) =4290773a(6) =4492205a(7) =4976429a(8) =21537833a(9) =21549349a(10) =51127261a(11) =56786089a(12) =60296573a(13) =80837773a(14) =87761789a(15) =94424465a(16) =138644873a(17) =168865001a(18) =221395541a(19) =255881453a(20) =297460453a(21) =305198249a(22) =360306365a(23) =562654205a(24) =635374253a(25) =673867253a(26) =808333573a(27) =1164757553a(28) =1210317349