OFFSET
1,1
LINKS
EXAMPLE
Illustration of first two rows:
/\
/ \
/ 1 \
/ \
/________\
/\ /\
/ \ / \
/ 2 \ 3 / 4 \
/ \ / \
/________\/________\
Triangles sharing a side are considered adjacent; e.g., 1 & 3 are adjacent in the figure, 1 & 2 are not.
CROSSREFS
KEYWORD
nonn
AUTHOR
Chris Cole (chris(AT)questrel.com), Oct 20 2009
EXTENSIONS
Edited by Jon E. Schoenfield, Jul 08 2017
Name simplified by Charles R Greathouse IV, Jul 09 2017
STATUS
approved