Positive numbers m such that m^2 - 1 divides 2^m - 1.

Terms

a(0) =2a(1) =4a(2) =16a(3) =36a(4) =256a(5) =456a(6) =1296a(7) =2556a(8) =4356a(9) =6480a(10) =8008a(11) =11952a(12) =26320a(13) =44100a(14) =47520a(15) =47880a(16) =49680a(17) =57240a(18) =65536a(19) =74448a(20) =84420a(21) =97812a(22) =141156a(23) =157080a(24) =165600a(25) =225456a(26) =278496a(27) =310590a(28) =333432a(29) =365940