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 A257514 #9 May 03 2015 10:05:03 %S A257514 1,2,5,2,16,9,4,24,20,13,2,72,42,34,17,4,48,66,36,38,21,2,120,78,96, %T A257514 54,52,25,4,72,102,60,90,48,56,29,6,168,114,144,90,120,66,70,33,2,312, %U A257514 230,160,194,124,158,88,74,37,6,120,232,162,96,150,84,138,92,88,41,4,408,248,360,262,176,226,140,190,114,92,45 %N A257514 Transpose of square array A257513. %C A257514 The array is read by downwards antidiagonals as A(1,1), A(1,2), A(2,1), A(1,3), A(2,2), A(3,1), ... %C A257514 See A257513. %H A257514 Antti Karttunen, <a href="/A257514/b257514.txt">Table of n, a(n) for n = 1..3321; the first 81 antidiagonals of the array</a> %H A257514 <a href="/index/Si#sieve">Index entries for sequences generated by sieves</a> %e A257514 The top left corner of the array: %e A257514 1, 2, 2, 4, 2, 4, 2, 4, 6, 2, 6, 4, 2, 4, 6 %e A257514 5, 16, 24, 72, 48, 120, 72, 168, 312, 120, 408, 312, 168, 360, 600 %e A257514 9, 20, 42, 66, 78, 102, 114, 230, 232, 248, 370, 246, 258, 470, 636 %e A257514 13, 34, 36, 96, 60, 144, 160, 162, 360, 198, 320, 336, 352, 494, 460 %e A257514 17, 38, 54, 90, 90, 194, 96, 262, 338, 144, 406, 434, 364, 330, 684 %e A257514 21, 52, 48, 120, 124, 150, 176, 240, 304, 210, 504, 458, 204, 526, 614 %e A257514 25, 56, 66, 158, 84, 226, 150, 210, 374, 280, 540, 318, 380, 456, 532 %e A257514 29, 70, 88, 138, 140, 216, 120, 264, 456, 292, 428, 490, 306, 378, 756 %e A257514 33, 74, 92, 190, 126, 198, 162, 326, 492, 180, 588, 432, 228, 574, 686 %e A257514 37, 88, 114, 192, 108, 240, 208, 350, 412, 308, 550, 366, 404, 504, 816 %e A257514 41, 92, 132, 186, 138, 290, 220, 282, 540, 258, 500, 538, 330, 614, 958 %e A257514 45, 106, 126, 216, 172, 314, 156, 382, 518, 204, 660, 480, 424, 732, 794 %e A257514 49, 110, 144, 254, 184, 270, 236, 360, 484, 332, 622, 578, 522, 576, 712 %e A257514 53, 124, 138, 306, 144, 346, 210, 330, 612, 282, 720, 684, 366, 498, 830 %e A257514 57, 128, 156, 300, 200, 336, 180, 430, 590, 352, 830, 552, 288, 600, 748 %e A257514 ... %o A257514 (Scheme) (define (A257514 n) (A257513bi (A004736 n) (A002260 n))) ;; A257513bi given in A257513. %Y A257514 Transpose of A257513. %Y A257514 Column 1: A016813. %Y A257514 Row 1: A001223, Row 2: A069482, Row 3: A109805, Row 4: A226502 (apart from the first term). %Y A257514 Cf. also A083140, A083221, A257252. %K A257514 nonn,tabl %O A257514 1,2 %A A257514 _Antti Karttunen_, May 01 2015