# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/

Search: id:a276941
Showing 1-1 of 1

%I A276941 #12 Sep 26 2016 20:41:07
%S A276941 2,6,3,9,15,5,10,25,35,7,14,21,49,77,11,18,33,55,121,143,13,22,75,65,
%T A276941 91,169,221,17,26,39,245,119,187,289,323,19,30,51,85,847,209,247,361,
%U A276941 437,23,34,105,95,133,1859,299,391,529,667,29,38,57,385,161,253,3757,493,551,841,899,31,42,69,115,1001,319,377,6137,589,713,961,1147,37
%N A276941 Square array A(row,col): A(1,col) = A276937(col), and for row > 1, A(row,col) = A003961(A(row-1,col)), read by descending antidiagonals: A(1,1), A(1,2), A(2,1), A(1,3), A(2,2), A(3,1), etc.
%C A276941 The starting offset is 2 because 1 is not included in the array proper. With it the terms are a permutation of A276078.
%H A276941 Antti Karttunen, <a href="/A276941/b276941.txt">Table of n, a(n) for n = 2..1276; the first 50 antidiagonals of array</a>
%F A276941 A(1,col) = A276937(col), and for row > 1, A(row,col) = A003961(A(row-1,col)).
%e A276941 The top left corner of the array:
%e A276941    2,   6,   9,   10,   14,    18,   22,   26,    30,   34,   38,    42
%e A276941    3,  15,  25,   21,   33,    75,   39,   51,   105,   57,   69,   165
%e A276941    5,  35,  49,   55,   65,   245,   85,   95,   385,  115,  145,   455
%e A276941    7,  77, 121,   91,  119,   847,  133,  161,  1001,  203,  217,  1309
%e A276941   11, 143, 169,  187,  209,  1859,  253,  319,  2431,  341,  407,  2717
%e A276941   13, 221, 289,  247,  299,  3757,  377,  403,  4199,  481,  533,  5083
%e A276941   17, 323, 361,  391,  493,  6137,  527,  629,  7429,  697,  731,  9367
%e A276941   19, 437, 529,  551,  589, 10051,  703,  779, 12673,  817,  893, 13547
%e A276941   23, 667, 841,  713,  851, 19343,  943,  989, 20677, 1081, 1219, 24679
%e A276941   29, 899, 961, 1073, 1189, 27869, 1247, 1363, 33263, 1537, 1711, 36859
%o A276941 (Scheme)
%o A276941 (define (A276941 n) (A276941bi (A002260 (- n 1)) (A004736 (- n 1))))
%o A276941 (define (A276941bi row col) (if (= 1 row) (A276937 col) (A003961 (A276941bi (- row 1) col))))
%Y A276941 Transpose: A276942.
%Y A276941 Topmost row: A276937, second row: A276938. Leftmost column: A000040.
%Y A276941 Cf. A003961.
%Y A276941 Cf. A276078 (sorted into ascending order).
%Y A276941 Cf. also A276075, A276953.
%K A276941 nonn,tabl
%O A276941 2,1
%A A276941 _Antti Karttunen_, Sep 25 2016

# Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE