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 A228611 #19 Feb 04 2014 13:01:11 %S A228611 23,67,83,89,97,101 %N A228611 Primes p such that the largest consecutive pair of p-smooth integers is the same as the largest consecutive pair of (p-1)-smooth integers. %C A228611 For each such prime p = a(n), the smallest superparticular ratio R = m/(m-1) such that R factors into primes less than or equal to p have all of these prime factors strictly less than p. %C A228611 p = a(n) here equals prime(k) for the values of k that make a(k) = a(k-1) in A002072 and also in A117581. %e A228611 For n = 1, a(1) = 23 is a prime such that the largest consecutive pair of 23-smooth integers, (11859210,11859211), is the same as the largest consecutive pair of 22-smooth integers (or of 19-smooth integers, 19 being the next smaller prime). %Y A228611 Cf. A002072, A117581, A228610 gives the index of the prime that is a(n) here. %K A228611 nonn,more,hard %O A228611 1,1 %A A228611 _Don N. Page_, Dec 18 2013