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 A162344 #5 Jan 29 2016 11:09:54 %S A162344 0,1,2,3,4,5,6,7,8,9,11,10,12,13,14,15,17,16,18,19,20,21,25,24,23,22, %T A162344 26,27,28,29,30,33,32,31,34,35,36,37,38,39,41,40,42,43,44,45,49,48,47, %U A162344 46,50,51,52,53,54,55,56,59,58,57,60,61,62,63,64,68,67,66,65,69,70,71,72 %N A162344 Array read by rows in which row n lists the numbers that are in the same "x" level in the mountain path of the primes. %C A162344 See the illustration "The mountain path of the primes", here. %H A162344 Omar E. Pol, <a href="http://www.polprimos.com/imagenespub/polmpfpn.jpg">Graph of the mountain path function for prime numbers</a> %H A162344 Omar E. Pol, <a href="http://www.polprimos.com/imagenespub/polmpca1.jpg"> Illustration: The mountain path of the primes</a> %e A162344 Array begins: %e A162344 0, 1, 2,. . . . . . . . . . . . . . . . . . %e A162344 . . . 3,. . . . . . . . . . . . . . . . . . %e A162344 . . . 4, 5, 6,. . . . . . . . . . . . . . . %e A162344 . . . . . . 7,. . . . . . . . . . . . . . . %e A162344 . . . . . . 8,11,12,. . . . . . . . . . . . %e A162344 . . . . . . 9,10,13,. . . . . . . . . . . . %e A162344 . . . . . . . . .14,17,18,25,26,. . . . . . %e A162344 . . . . . . . . .15,16,19,24,27,. . . . . . %e A162344 . . . . . . . . . . . .20,23,28,33,34,. . . %e A162344 . . . . . . . . . . . .21,22,29,32,35,. . . %e A162344 . . . . . . . . . . . . . . ,30,31,36,. . . %e A162344 . . . . . . . . . . . . . . . . . .37,. . . %Y A162344 Cf. A162200, A162201, A162202, A162203, A162340, A162341, A162342, A162343, A162345, A162350, A162351, A162352. %K A162344 nonn,tabf %O A162344 0,3 %A A162344 _Omar E. Pol_, Jul 24 2009