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 A115733 #8 Nov 16 2023 08:43:56
%S A115733 1,1,2,2,3,3,3,6,6,6,6,6,6,7,7,7,7,7,7,7,10,10,10,10,10,10,10,10,10,
%T A115733 10,11,11,11,11,11,11,11,11,11,11,11,14,14,14,14,14,14,14,14,14,14,14,
%U A115733 14,14,14,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19
%N A115733 prime(n)-n, repeated (prime(n)-n) times.
%t A115733 Flatten@Table[Prime[n]-n, {n, 10}, {Prime[n]-n}]
%Y A115733 Cf. A014689, A115732, A002024.
%K A115733 nonn,less
%O A115733 1,3
%A A115733 _Zak Seidov_, Jan 30 2006