A333866 - OEIS

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A333866

Lexicographically earliest sequence of distinct positive integers, which when mapped onto a square spiral, gives a set without four distinct points forming a square.

1, 2, 3, 5, 6, 7, 10, 11, 13, 14, 17, 18, 20, 21, 26, 27, 30, 31, 37, 38, 41, 43, 44, 46, 50, 52, 55, 57, 58, 65, 66, 70, 73, 79, 82, 83, 88, 91, 92, 101, 102, 104, 110, 111, 116, 122, 124, 127, 132, 133, 141, 143, 145, 146, 152, 156, 157, 167, 170, 171, 180

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

This sequence has similarities with A005282.

LINKS

Rémy Sigrist, Table of n, a(n) for n = 1..10000

Rémy Sigrist, Scatterplot of (A174344(a(n)), A274923(a(n))) in the region -2000 <= x, y <= 2000

Rémy Sigrist, C# program for A333866

EXAMPLE

The first terms, mapped onto a square spiral, are:

65---*---*---*---*---*---*--58--57