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.

A163898 Array A(i,j) giving the square of distance from (i,j) to the location where A054238(i,j) is situated in array A163357(i,j), listed antidiagonally as A(0,0), A(0,1), A(1,0), A(0,2), A(1,1), A(2,0), ...

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%I A163898 #8 Sep 14 2015 23:35:19
%S A163898 0,0,1,8,1,4,18,5,2,9,0,5,2,5,16,2,1,2,9,10,25,0,1,4,9,16,17,36,0,1,4,
%T A163898 9,16,25,36,49,128,1,2,1,10,9,10,25,64,162,113,4,5,18,5,4,5,50,81,128,
%U A163898 113,100,9,10,5,10,1,64,65,100,128,113,100,89,16,17,20,25,64,81,100
%N A163898 Array A(i,j) giving the square of distance from (i,j) to the location where A054238(i,j) is situated in array A163357(i,j), listed antidiagonally as A(0,0), A(0,1), A(1,0), A(0,2), A(1,1), A(2,0), ...
%H A163898 A. Karttunen, <a href="/A163898/b163898.txt">Table of n, a(n) for n = 0..32895</a>
%e A163898 The top left 8 X 8 corner of this array:
%e A163898    0  0  8 18  0  2  0  0
%e A163898    1  1  5  5  1  1  1  1
%e A163898    4  2  2  2  4  4  2  4
%e A163898    9  5  9  9  9  1  5  9
%e A163898   16 10 16 16 10 18 10 16
%e A163898   25 17 25  9  5  5 17 25
%e A163898   36 36 10  4 10 20 36 36
%e A163898   49 25  5  1 25 29 25 49
%Y A163898 a(n) = A163900(A054238(n)). Positions of zeros: A165403. See also A163899, A163904.
%K A163898 nonn,tabl,look
%O A163898 0,4
%A A163898 _Antti Karttunen_, Sep 19 2009