Numbers k such that (10^k - 1) - 4*10^floor(k/2) is a palindromic wing prime (a.k.a. near-repdigit palindromic prime).
A077786
Numbers k such that (10^k - 1) - 4*10^floor(k/2) is a palindromic wing prime (a.k.a. near-repdigit palindromic prime).
Terms
- a(0) =177a(1) =225a(2) =397a(3) =1245a(4) =8457a(5) =20105a(6) =111725
External references
- oeis: A077786