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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.

A276609 Transpose of square array A276610.

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%I A276609 #8 Sep 15 2016 12:23:05
%S A276609 1,2,5,2,10,9,4,12,20,13,2,24,24,28,17,4,18,44,36,38,21,6,28,30,66,48,
%T A276609 46,25,2,44,54,46,90,58,56,29,4,22,84,84,60,114,68,64,33,8,38,40,122,
%U A276609 104,74,136,82,74,37,4,48,60,54,156,136,86,152,92,82,41,2,40,116,94,76,194,162,106,174,102,92,45
%N A276609 Transpose of square array A276610.
%C A276609 The array is read by descending antidiagonals as A(1,1), A(1,2), A(2,1), A(1,3), A(2,2), A(3,1), ...
%C A276609 See A276610.
%H A276609 Antti Karttunen, <a href="/A276609/b276609.txt">Table of n, a(n) for n = 1..5050; the first 100 antidiagonals of array</a>
%H A276609 <a href="/index/Si#sieve">Index entries for sequences generated by sieves</a>
%e A276609 The top left 16 x 15 corner of the array:
%e A276609    1,   2,   2,   4,   2,   4,   6,   2,   4,   8,   4,   2,   4,   6,   8
%e A276609    5,  10,  12,  24,  18,  28,  44,  22,  38,  48,  40,  24,  38,  58,  60
%e A276609    9,  20,  24,  44,  30,  54,  84,  40,  60, 116,  76,  38,  70, 102, 134
%e A276609   13,  28,  36,  66,  46,  84, 122,  54,  94, 162, 104,  52, 116, 142, 204
%e A276609   17,  38,  48,  90,  60, 104, 156,  76, 120, 236, 136,  62, 148, 194, 256
%e A276609   21,  46,  58, 114,  74, 136, 194,  90, 150, 288, 166, 108, 164, 234, 322
%e A276609   25,  56,  68, 136,  86, 162, 234, 102, 190, 336, 194, 124, 210, 290, 390
%e A276609   29,  64,  82, 152, 106, 180, 282, 122, 210, 406, 212, 148, 240, 348, 446
%e A276609   33,  74,  92, 174, 120, 210, 316, 144, 240, 446, 270, 150, 270, 408, 498
%e A276609   37,  82, 102, 202, 128, 238, 348, 164, 270, 510, 298, 182, 300, 436, 578
%e A276609   41,  92, 114, 222, 150, 260, 388, 180, 302, 576, 318, 198, 354, 460, 642
%e A276609   45, 100, 126, 244, 162, 288, 428, 198, 330, 622, 356, 222, 388, 524, 684
%e A276609   49, 110, 138, 264, 174, 318, 464, 210, 364, 680, 382, 242, 414, 576, 774
%e A276609   53, 118, 148, 284, 192, 346, 504, 230, 390, 738, 412, 260, 448, 630, 828
%e A276609   57, 128, 158, 310, 204, 366, 548, 240, 430, 786, 462, 272, 474, 696, 870
%e A276609   61, 136, 172, 330, 216, 396, 584, 264, 456, 844, 492, 300, 504, 726, 948
%o A276609 (Scheme) (define (A276609 n) (A276610bi (A004736 n) (A002260 n))) ;; Code for A276610bi given in A276610.
%Y A276609 Transpose: A276610.
%Y A276609 Cf. also A257514.
%K A276609 nonn,tabl
%O A276609 1,2
%A A276609 _Antti Karttunen_, Sep 13 2016