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 A006576 M4923 #19 Jul 08 2025 16:50:02 %S A006576 14,19,47,61,75,197,742,1104,1537,2580,3684,4788,7385,7647,7909,31331, %T A006576 34285,34348,55604,86935,120284,129106,147640,156146,174680,183186, %U A006576 298320 %N A006576 Primitive repfigit numbers. %D A006576 M. Keith, Repfigit Numbers, J. Recreational Math., Vol. 19, No. 2, pp. 41-42, 1987. %D A006576 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %Y A006576 Cf. A007629. %K A006576 nonn,base %O A006576 1,1 %A A006576 _N. J. A. Sloane_ %E A006576 a(19) corrected by _Sean A. Irvine_, May 12 2017