|
%I #9 Mar 30 2019 18:18:25
%S 0,3,0,3,0,3,0,4,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,3,0,3,0,3,0,3,0,3,0,
%T 3,0,3,0,3,0,3,0,3,0,3,0,3,0,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,
%U 1,2,1,2,1,2,1,2,1,2,1,2,3,0,3,0,3,0,3,0,3,0,3,0,3,0,3,0,3,0,3,0,3,0,3,0,3,0
%N Fill the plane with the square spiral with cells numbered as in A275609; sequence gives the cells along the South 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="/A307199/b307199.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 South of the X.
%Y Cf. A275609.
%Y The eight spokes starting at the origin are A307193 - A307200.
%K nonn
%O 0,2
%A _N. J. A. Sloane_, Mar 29 2019
%E More terms from _Alois P. Heinz_, Mar 30 2019
|
