OFFSET
0,3
COMMENTS
The structure is essentially the same as A220522 but here the borders do not contain D-toothpicks with exposed endpoints except the initial D-toothpick. The structure is one of the oblique wedges of several D-toothpick structures. For more information see A220500. The first differences (A233763) give the number of toothpicks or D-toothpicks added at n-th stage.
LINKS
CROSSREFS
KEYWORD
nonn
AUTHOR
Omar E. Pol, Dec 15 2013
STATUS
approved