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A367896 a(n) is the y-coordinate of the n-th point in a square spiral mapped to a square grid rotated by Pi/4 using the variant of the distance-limited strip bijection described in A367150.

%I A367896 #19 Jul 21 2024 11:35:24
%S A367896 0,1,1,1,0,-1,-1,-1,0,0,1,2,3,2,2,1,0,0,-1,-2,-3,-2,-2,-1,0,1,2,2,3,3,
%T A367896 4,3,3,2,2,1,0,-1,-2,-2,-3,-3,-4,-3,-3,-2,-2,-1,0,0,1,2,3,4,4,5,6,5,4,
%U A367896 4,3,2,1,1,0,0,-1,-2,-3,-4,-4,-5,-6,-5,-4,-4,-3,-2,-1,-1,0,1
%N A367896 a(n) is the y-coordinate of the n-th point in a square spiral mapped to a square grid rotated by Pi/4 using the variant of the distance-limited strip bijection described in A367150.
%H A367896 Rainer Rosenthal, <a href="/A367896/b367896.txt">Table of n, a(n) for n = 0..3000</a>
%H A367896 Hugo Pfoertner, <a href="https://oeis.org/plot2a?name1=A367895&amp;name2=A367896&amp;tform1=untransformed&amp;tform2=untransformed&amp;shift=0&amp;radiop1=xy&amp;drawlines=true">Plot of mapped spiral</a>, using Plot 2.
%o A367896 (PARI) \\ See A367895 for definitions of required functions.
%o A367896 a367896(n) = BijectionD([ax(n), ay(n)])[2]
%Y A367896 A367895 gives the corresponding x-coordinates.
%Y A367896 Cf. A307110, A362955, A362956, A367150.
%K A367896 sign
%O A367896 0,12
%A A367896 _Hugo Pfoertner_ and _Rainer Rosenthal_, Dec 04 2023