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Fill the plane with the square spiral with cells numbered as in A275609; sequence gives the cells along the East spoke starting at the origin.
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%I #13 Mar 30 2019 18:03:10

%S 0,1,3,1,3,1,3,1,3,1,3,2,0,2,0,2,0,2,0,2,0,2,0,2,0,2,0,2,0,4,1,3,1,3,

%T 1,3,1,3,1,3,1,3,1,3,1,3,1,3,1,3,1,3,1,3,1,3,2,0,2,0,2,0,2,0,2,0,2,0,

%U 2,0,2,0,2,0,2,0,2,0,2,0,2,0,2,0,2,0,2,0,2,0,1,3,1,3,1,3,1,3,1,3,1,3,1,3,1,3

%N Fill the plane with the square spiral with cells numbered as in A275609; sequence gives the cells along the East spoke starting at the origin.

%C The Example section of A275609 shows the central portion of the spiral very clearly. The link below shows a larger portion but is harder to read.

%H Alois P. Heinz, <a href="/A307193/b307193.txt">Table of n, a(n) for n = 0..1000</a>

%H N. J. A. Sloane, <a href="/A275609/a275609.txt">Central portion of spiral, shown without spaces</a> [The central 0 (at (0,0)) has been changed to an X. The illustration shows cells (x,y) with -35 <= x <= 35, -33 <= y <= 36.] The present sequence gives the numbers to the East of the X.

%Y Cf. A275609.

%Y The eight spokes starting at the origin are A307193 - A307200.

%K nonn

%O 0,3

%A _N. J. A. Sloane_, Mar 29 2019

%E More terms from _Alois P. Heinz_, Mar 30 2019