This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A116692 #16 Jan 22 2023 07:26:02 %S A116692 2,3,5,7,11,1111111111111111111,11111111111111111111111 %N A116692 Primes with only one distinct decimal digit. Also called repunit primes or repdigit primes. %C A116692 Primes in A010785 (repdigit numbers). Union of single-digit primes and A004022 (repunit primes). A004023 shows that the next term has 317 1's. The Mersenne primes (A000668) are the binary analog (i.e., bits are all 1's). %D A116692 Clifford A. Pickover, A Passion for Mathematics (2005) at 60, 297. %Y A116692 A004022 is a subsequence. %Y A116692 Cf. A004023, A010785, A000668. %Y A116692 A subsequence of A055387, but not of A225053. %K A116692 base,easy,nonn %O A116692 1,1 %A A116692 _Rick L. Shepherd_, Feb 22 2006 %E A116692 Reference provided by _Harvey P. Dale_, Apr 19 2014 %E A116692 Definition expanded by _N. J. A. Sloane_, Jan 22 2023