A343385 - OEIS

A343385

The ordered square spiral numbers visited by the knight in A343356.

1, 10, 29, 2, 5, 40, 7, 4, 11, 26, 83, 174, 123, 84, 27, 12, 15, 18, 35, 64, 97, 36, 65, 142, 63, 66, 149, 102, 143, 146, 103, 100, 141, 62, 33, 58, 55, 28, 87, 178, 131, 92, 31, 54, 13, 60, 139, 248, 191, 316, 247, 136, 91, 182, 185, 132, 237, 300, 371, 450, 295, 228, 173, 82, 49, 78, 45, 74

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

OFFSET

1,2

COMMENTS

This is the ordered square-spiral numbers visited by a knight on a square spiral as numbered in A343356. See that sequence for further details.

LINKS

Table of n, a(n) for n=1..68.

Scott R. Shannon, Image showing the 370 visited squares. The spiral is numbered with the ordered spiral numbers. The starting square is highlighted in white, the visited squares in yellow, the path is colored across the spectrum to show the relative step ordering, and the final square is highlighted in red.

CROSSREFS

Cf. A343356, A316667, A323714, A323808, A329519, A329520, A335844.

Sequence in context: A239477 A345696 A066527 * A103423 A102542 A098751

Adjacent sequences: A343382 A343383 A343384 * A343386 A343387 A343388

KEYWORD

nonn,fini

AUTHOR

Scott R. Shannon, Apr 13 2021

STATUS

approved