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A307190 Positions of 2's in the square spiral in A275609. 2
2, 5, 8, 15, 21, 26, 28, 31, 36, 39, 41, 46, 48, 55, 60, 73, 75, 82, 84, 86, 91, 93, 98, 101, 104, 106, 108, 110, 116, 118, 120, 129, 131, 138, 143, 159, 161, 170, 172, 174, 176, 183, 185, 187, 192, 197, 199, 202, 204, 206, 208, 211, 218, 220, 222, 224, 235 (list; graph; refs; listen; history; text; internal format)
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) = 2 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: A329603 A309546 A261543 * A183409 A262867 A024808

Adjacent sequences:  A307187 A307188 A307189 * A307191 A307192 A307193

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Mar 28 2019

STATUS

approved

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Last modified May 17 08:50 EDT 2021. Contains 343969 sequences. (Running on oeis4.)