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 A371236 #13 Mar 16 2024 17:27:01 %S A371236 1,2,4,3,6,9,5,13,17,21,7,12,22,27,32,8,14,20,26,38,44,10,24,31,45,52, %T A371236 59,66,11,19,35,43,51,67,75,83,15,33,42,60,69,78,87,96,105,16,36,46, %U A371236 56,76,86,106,116,126,136,18,29,40,62,73,84,95,117,128,139,150 %N A371236 Triangle T(n, k), n > 0, k = 1..n, read and filled in the greedy way by rows with distinct positive integers such that for any n > 0, the terms in the n-th row are congruent modulo n. %C A371236 Every integer appears in the sequence (as each row starts with the least missing value). %H A371236 Rémy Sigrist, <a href="/A371236/b371236.txt">Table of n, a(n) for n = 1..10011</a> (rows for n = 1..141 flattened) %H A371236 Rémy Sigrist, <a href="/A371236/a371236.gp.txt">PARI program</a> %H A371236 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %e A371236 Triangle T(n, k) begins: %e A371236 1 %e A371236 2 4 %e A371236 3 6 9 %e A371236 5 13 17 21 %e A371236 7 12 22 27 32 %e A371236 8 14 20 26 38 44 %e A371236 10 24 31 45 52 59 66 %e A371236 11 19 35 43 51 67 75 83 %o A371236 (PARI) See Links section. %Y A371236 See A075383, A371246 and A371248 for similar sequences. %Y A371236 Cf. A371237 (inverse). %K A371236 nonn,tabl %O A371236 1,2 %A A371236 _Rémy Sigrist_, Mar 16 2024