OFFSET
1,4
COMMENTS
All internal regions in the toothpick structure are squares and rectangles.
LINKS
EXAMPLE
Triangle begins:
0;
0, 1;
2, 3, 1;
10, 13, 3, 1;
42, 53, 13, 3, 1;
170, 213, 53, 13, 3, 1;
682, 853, 213, 53, 13, 3, 1;
2730, 3413, 853, 213, 53, 13, 3, 1;
10922, 13653, 3413, 853, 213, 53, 13, 3, 1;
43690, 54613, 13653, 3413, 853, 213, 53, 13, 3, 1;
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Omar E. Pol, Sep 24 2012
STATUS
approved