OFFSET
1
REFERENCES
Rémy Sigrist and N. J. A. Sloane, Two-Dimensional Paper-Folding, Manuscript in preparation, May 2021.
EXAMPLE
The array (which starts in the bottom left corner) begins:
# ....
# [. 0 . 0 . 1 . 1 . 0 . 1 . 1 .]
# [0 . 1 . 0 . 1 . 0 . 1 . 0 . 1]
# [. 0 . 0 . 1 . 1 . 0 . 1 . 1 .]
# [0 . 0 . 1 . 1 . 0 . 0 . 1 . 1]
# [. 1 . 0 . 0 . 1 . 1 . 1 . 0 .]
# [1 . 0 . 1 . 0 . 1 . 0 . 1 . 0]
# [. 1 . 0 . 0 . 1 . 1 . 1 . 0 .]
# [1 . 1 . 1 . 1 . 0 . 0 . 0 . 0]
# [. 0 . 1 . 1 . 1 . 0 . 0 . 1 .]
# [0 . 1 . 0 . 1 . 0 . 1 . 0 . 1]
# [. 0 . 1 . 1 . 1 . 0 . 0 . 1 .]
# [1 . 1 . 0 . 0 . 1 . 1 . 0 . 0]
# [. 1 . 1 . 0 . 1 . 1 . 0 . 0 .]
# [1 . 0 . 1 . 0 . 1 . 0 . 1 . 0]
# [. 1 . 1 . 0 . 1 . 1 . 0 . 0 .]
The first few antidiagonals are:
[1, 1]
[1, 0, 1, 1]
[0, 1, 1, 1, 0, 0]
[1, 0, 0, 0, 1, 1, 0, 1]
[1, 1, 1, 0, 1, 0, 1, 1, 1, 1]
[0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0]
[0, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 0, 0, 0]
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Rémy Sigrist and N. J. A. Sloane, Apr 12 2021.
STATUS
approved