OFFSET
1,2
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
KEYWORD
nonn,tabf
AUTHOR
Clark Kimberling, Dec 22 2010
STATUS
approved