a(n) is the largest prime before A002281(n); repdigits repeating 7.
A099667
a(n) is the largest prime before A002281(n); repdigits repeating 7.
Terms
- a(0) =5a(1) =73a(2) =773a(3) =7759a(4) =77773a(5) =777769a(6) =7777769a(7) =77777761a(8) =777777773a(9) =7777777741a(10) =77777777767a(11) =777777777773
External references
- oeis: A099667