A307191 Positions of 3's in the square spiral in A275609.

3, 7, 10, 17, 19, 24, 29, 32, 34, 43, 45, 50, 52, 57, 65, 67, 69, 71, 78, 80, 87, 89, 94, 96, 99, 111, 113, 115, 122, 124, 126, 133, 135, 145, 148, 150, 152, 154, 164, 166, 168, 177, 179, 181, 188, 190, 193, 195, 209, 212, 214, 216, 226, 228, 230, 232, 241

Offset

1,1

Links

Alois P. Heinz, Table of n, a(n) for n = 1..20000 (first 1216 terms from N. J. A. Sloane)

Rémy Sigrist, Colored scatterplot of (x,y) such that A275609(x,y) = 3 and -500 <= x <= 500 and -500 <= y <= 500 (where the color is function of (x mod 2) + 2 * (y mod 2))

Crossrefs

Cf. A275609, A307188-A307192.

Sequence in context: A359147 A163714 A333910 * A234638 A345888 A128223

Adjacent sequences: A307188 A307189 A307190 * A307192 A307193 A307194

Keyword

nonn

Author

N. J. A. Sloane, Mar 28 2019

Status

approved