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A183051 Array of least knight's moves to points on the square |i|+|j|=n on infinite chessboard. 4
0, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 3, 1, 1, 3, 1, 1, 3, 1, 1, 3, 1, 1, 2, 2, 4, 2, 2, 2, 4, 2, 2, 2, 4, 2, 2, 2, 4, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 2, 2, 2, 4, 4, 4, 2, 2, 2, 4, 4, 4, 2, 2, 2, 4, 4, 4, 2, 2, 2, 4, 5, 3, 3, 3, 3, 3, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..92.

FORMULA

See A065775.

EXAMPLE

Top 5 rows:

0

3 3 3 3

2 2 2 2 2 2 2 2

3 1 1 3 1 1 3 1 1 3 1 1

2 2 4 2 2 2 4 2 2 2 4 2 2 2 4 2

Row n has 4n numbers which form a square of points (i.e., unit squares) on an infinite chessboard.  The first 3 of these concentric squares are represented as follows:

....2

..2.3.2

2.3.0.3.2

..2.3.2

....2

CROSSREFS

Cf. A065775, A183050, A183053.

Sequence in context: A138070 A081334 A106694 * A031355 A337265 A177228

Adjacent sequences:  A183048 A183049 A183050 * A183052 A183053 A183054

KEYWORD

nonn,tabf

AUTHOR

Clark Kimberling, Dec 22 2010

STATUS

approved

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Last modified September 24 01:21 EDT 2020. Contains 337315 sequences. (Running on oeis4.)