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 A082254 #7 Nov 09 2019 12:48:08
%S A082254 20576,131516852,21902526953,32003537054,42104547155,52205557256,
%T A082254 62306567357,72407577458,82508587559,92609597660,102710607761,
%U A082254 112811617862,122912627963,133013638064,143114648165,153215658266,163316516683517,17184017517684518,18185018518685519
%N A082254 Concatenation of (6n-5), (6n-4), (6n-3), (6n-2), (6n-1) and 6n divided by 6.
%H A082254 Andrew Howroyd, <a href="/A082254/b082254.txt">Table of n, a(n) for n = 1..1000</a>
%e A082254 a(3) = 131415161718/6 = 21902526953.
%o A082254 (PARI) a(n)={fromdigits(concat(vector(6, k, digits(6*(n-1)+k))))/6} \\ _Andrew Howroyd_, Nov 09 2019
%Y A082254 Cf. A074996, A082251, A082252, A082253, A082255, A082256.
%K A082254 base,easy,nonn
%O A082254 1,1
%A A082254 _Amarnath Murthy_, Apr 11 2003
%E A082254 Terms a(8) and beyond from _Andrew Howroyd_, Nov 09 2019