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 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