Numbers k such that (10^k - 1)/9 + 7*10^floor(k/2) is a palindromic wing prime (a.k.a. near-repdigit palindromic prime).
A077791
Numbers k such that (10^k - 1)/9 + 7*10^floor(k/2) is a palindromic wing prime (a.k.a. near-repdigit palindromic prime).
Terms
- a(0) =3a(1) =9a(2) =13a(3) =15a(4) =769a(5) =1333a(6) =1351a(7) =6331a(8) =262041
External references
- oeis: A077791