A307192 Positions of 4's in the square spiral in A275609.
13, 37, 62, 102, 140, 157, 200, 217, 250, 290, 330, 359, 392, 443, 452, 492, 525, 566, 629, 651, 686, 723, 768, 772, 847, 889, 912, 953, 1009, 1097, 1157, 1170, 1215, 1279, 1379, 1459, 1468, 1509, 1581, 1693, 1781, 1807, 1835, 1915, 1996, 2039, 2135
Offset: 1
Keywords
Links
- Alois P. Heinz, Table of n, a(n) for n = 1..2886
- Rémy Sigrist, Colored scatterplot of (x,y) such that A275609(x,y) = 4 and -500 <= x <= 500 and -500 <= y <= 500 (where the color is function of (x mod 2) + 2 * (y mod 2))
- N. J. A. Sloane, Central portion of spiral in A275609 showing just the 4's [Entries 0,1,2,3 in the spiral have been replaced by dots. The central 0 has been changed to an X. The illustration shows cells (x,y) with -35 <= x <= 35, -33 <= y <= 36.]
