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 A348357 #6 Oct 17 2021 15:27:40
%S A348357 1,2,4,3,5,7,6,9,8,10,12,18,15,11,13,24,36,30,21,14,16,48,72,60,42,27,
%T A348357 17,19,96,144,120,84,54,33,20,22,192,288,240,168,108,66,39,23,25,384,
%U A348357 576,480,336,216,132,78,45,26,28,768,1152,960,672,432,264,156,90,51,29,31
%N A348357 Square array T(n, k), n, k > 0, read by antidiagonal upwards; the k-th column contains, in ascending order, the integers m such that A348331(m) = k.
%C A348357 When interpreted as a flat array, we have a permutation of the positive integers.
%H A348357 Rémy Sigrist, <a href="/A348357/a348357.gp.txt">PARI program for A348357</a>
%H A348357 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%F A348357 Sum_{i = 1..n-1} T(i, k) <= T(n, k).
%F A348357 T(n, 1) = A098011(n+1).
%e A348357 Array T(n, k) begins:
%e A348357 n\k| 1 2 3 4 5 6 7 8 9 10
%e A348357 ---+-----------------------------------------------------------
%e A348357 1| 1 4 7 10 13 16 19 22 25 28
%e A348357 2| 2 5 8 11 14 17 20 23 26 29
%e A348357 3| 3 9 15 21 27 33 39 45 51 57
%e A348357 4| 6 18 30 42 54 66 78 90 102 114
%e A348357 5| 12 36 60 84 108 132 156 180 204 228
%e A348357 6| 24 72 120 168 216 264 312 360 408 456
%e A348357 7| 48 144 240 336 432 528 624 720 816 912
%e A348357 8| 96 288 480 672 864 1056 1248 1440 1632 1824
%e A348357 9| 192 576 960 1344 1728 2112 2496 2880 3264 3648
%e A348357 10| 384 1152 1920 2688 3456 4224 4992 5760 6528 7296
%o A348357 (PARI) See Links section.
%Y A348357 Cf. A098011, A348331, A348356.
%K A348357 nonn,tabl
%O A348357 1,2
%A A348357 _Rémy Sigrist_, Oct 14 2021