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.

A268931 Square array: A(i,j) = F(A065091(i),A065091(j)), where F(a,b) is the dyadic function defined in A269158. 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), ...

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%I A268931 #15 Feb 28 2016 07:54:56
%S A268931 3,3,2,3,5,0,1,2,7,2,1,1,7,0,0,3,6,3,0,3,2,3,6,2,11,7,7,0,1,1,2,7,14,
%T A268931 3,0,2,3,6,1,14,13,15,2,3,2,3,5,3,13,1,0,14,4,0,0,1,5,5,3,11,17,10,0,
%U A268931 0,0,0,3,2,4,10,8,8,25,13,3,3,7,2,3,1,1,15,12,11,19,26,1,4,4,0,0,1,2,6,1,11,18,19,0,3,6,0,7,3,2
%N A268931 Square array: A(i,j) = F(A065091(i),A065091(j)), where F(a,b) is the dyadic function defined in A269158. 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), ...
%H A268931 Antti Karttunen, <a href="/A268931/b268931.txt">Table of n, a(n) for n = 1..9591; the first 138 antidiagonals of the array</a>
%F A268931 A(i,j) = F(A065091(i),A065091(j)) = A269158(A065091(i),A006254(j)), function F defined as in A269158.
%e A268931 The top left [1 .. 19] x [1 .. 19] section of the array:
%e A268931 3, 3, 3,  1,  1,  3,  3,  1,  3,  3,  1,  3,  3,  1,  3,  1,  1,  3,  1
%e A268931 2, 5, 2,  1,  6,  6,  1,  6,  5,  5,  2,  1,  2,  2,  6,  1,  5,  6,  5
%e A268931 0, 7, 7,  3,  2,  2,  1,  3,  5,  4,  1,  6,  3,  5,  5,  0,  7,  3,  7
%e A268931 2, 0, 0, 11,  7, 14, 13,  3, 10, 15,  1,  7,  4, 10,  5, 11,  6,  3,  2
%e A268931 0, 3, 7, 14, 13,  1, 11,  8, 12, 11,  2,  2,  9,  6,  5, 11,  4, 10, 15
%e A268931 2, 7, 3, 15,  0, 17,  8, 11, 18, 10,  2,  3, 13,  0,  8,  8, 14,  1,  2
%e A268931 0, 0, 2, 14, 10, 25, 19, 19, 10, 16, 26,  2,  2,  2, 18,  9, 17, 24, 24
%e A268931 2, 3, 4,  0, 13, 26,  0, 23,  8, 11, 26, 29,  5,  7, 22, 27, 26,  9, 27
%e A268931 2, 0, 0,  3,  1,  3, 27, 29, 29, 14, 22, 10, 31, 26,  5, 25, 30,  5,  9
%e A268931 0, 0, 3,  4,  6, 27,  3, 28, 19, 31, 22, 28,  8, 15, 10, 31,  2,  6, 14
%e A268931 0, 7, 4,  0,  7,  3, 27, 31, 19, 19, 37, 33, 23, 16, 37, 23, 19, 52, 48
%e A268931 2, 0, 7, 14, 11,  2,  3, 28,  3, 21,  0, 41, 20, 23, 34, 28, 40, 62, 62
%e A268931 0, 3, 0, 15,  0, 12,  1,  6, 22,  3, 54, 61, 43, 43, 29, 43, 27, 62,  0
%e A268931 2, 7, 2,  1, 11,  1,  1,  0, 23,  0, 53, 62,  0, 47, 28, 42, 16,  1, 62
%e A268931 2, 3, 0,  4,  0, 25,  3,  3, 16, 31,  0,  3, 60, 57, 53, 29, 26, 43, 38
%e A268931 2, 0, 3,  0,  2, 25, 26,  8,  0,  4, 54, 53,  0,  1, 44, 59, 31, 37,  2
%e A268931 0, 0, 2, 15,  9, 31,  0, 15,  3, 31, 54,  1, 50, 61, 47, 38, 61, 35, 35
%e A268931 0, 7, 0,  0, 11,  0, 27, 10,  4,  5, 53, 63, 61,  2, 42, 38, 34, 67, 67
%e A268931 2, 0, 0,  1, 10,  3, 27, 28, 12,  9, 53, 63,  3, 57, 35,  1, 38,  0, 71
%o A268931 (Scheme) (define (A268931 n) (A269158auxbi (A065091 (A002260 n)) (A065091 (A004736 n)))) ;; Code for A269158auxbi given in A269158.
%Y A268931 Transpose: A268932.
%Y A268931 Cf. A065091 (the main diagonal).
%Y A268931 Cf. A006254, A269158.
%K A268931 nonn,tabl
%O A268931 1,1
%A A268931 _Antti Karttunen_, Feb 19 2016