Numbers of the form n^2+1 that divide 4^n-1.
A273999
Numbers of the form n^2+1 that divide 4^n-1.
Terms
- a(0) =1a(1) =5a(2) =17a(3) =257a(4) =46657a(5) =65537a(6) =148997a(7) =67371265a(8) =405458497a(9) =1370776577a(10) =3497539601a(11) =4294967297a(12) =80542440001a(13) =422240040001
External references
- oeis: A273999