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 A088744 #4 Oct 19 2017 03:14:25 %S A088744 1,4,7,7,10,13,13,13,16,19,22,22,22,25,25,25,28,31,34,34,37,40,40,40, %T A088744 40,43,46,46,46,49,49,49 %N A088744 a(n) = 3*A088023(n) - 2. %Y A088744 Cf. A088023. %K A088744 nonn %O A088744 1,2 %A A088744 _Gary W. Adamson_, Oct 12 2003 %E A088744 Edited by _Don Reble_, Nov 13 2005