cp's OEIS Frontend

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.

A361926 Square array A(n, k) of distinct positive integers, n, k > 0, read and filled by upwards antidiagonals in the greedy way such that A(n, k) is a multiple of A(n, 1).

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%I A361926 #7 Apr 01 2023 08:50:15
%S A361926 1,2,3,4,6,5,7,8,10,9,11,14,12,16,13,15,22,21,20,18,17,19,30,33,28,24,
%T A361926 26,23,25,38,45,44,35,32,34,27,29,50,57,60,55,42,36,40,31,37,58,75,76,
%U A361926 90,66,49,48,46,39,41,74,87,100,95,105,77,56,52,54,43
%N A361926 Square array A(n, k) of distinct positive integers, n, k > 0, read and filled by upwards antidiagonals in the greedy way such that A(n, k) is a multiple of A(n, 1).
%C A361926 This sequence is a variant of A361748.
%C A361926 As a flat sequence, this is a permutation of the positive integers with inverse A361940.
%H A361926 Rémy Sigrist, <a href="/A361926/a361926.gp.txt">PARI program</a>
%H A361926 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%e A361926 Array A(n, k) begins:
%e A361926   n\k |  1   2    3    4    5    6    7    8    9   10
%e A361926   ----+-----------------------------------------------
%e A361926     1 |  1   3    5    9   13   17   23   27   31   39
%e A361926     2 |  2   6   10   16   18   26   34   40   46   54
%e A361926     3 |  4   8   12   20   24   32   36   48   52   64
%e A361926     4 |  7  14   21   28   35   42   49   56   63   70
%e A361926     5 | 11  22   33   44   55   66   77   88   99  110
%e A361926     6 | 15  30   45   60   90  105  120  135  165  180
%e A361926     7 | 19  38   57   76   95  114  133  152  171  190
%e A361926     8 | 25  50   75  100  125  150  175  200  225  250
%e A361926     9 | 29  58   87  116  145  174  203  232  261  290
%e A361926    10 | 37  74  111  148  185  222  259  296  333  370
%o A361926 (PARI) See Links section.
%Y A361926 Cf. A361748, A361940 (inverse).
%K A361926 nonn,tabl
%O A361926 1,2
%A A361926 _Rémy Sigrist_, Mar 30 2023