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 A068162 #8 Jan 31 2024 01:06:57 %S A068162 7,77377,7772777,777767777,77777677777,7777774777777,777777727777777, %T A068162 77777777677777777,77777777704777777777,777777777727777777777, %U A068162 77777777777677777777777,7777777777772777777777777,777777777777757777777777777 %N A068162 Smallest prime beginning and ending in at least n 7's. %e A068162 a(2) = 77377 is a prime that starts with 77 and ends in 77 (two 7's). %Y A068162 Cf. A068160, A068161. %K A068162 base,nonn %O A068162 1,1 %A A068162 _Amarnath Murthy_, Feb 24 2002 %E A068162 More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 07 2003 %E A068162 a(1)=7 from _Sean A. Irvine_, Jan 30 2024