OFFSET
1,18
LINKS
Marko R. Riedel et al., Necklaces made of black and white beads, Math StackExchange, Feb 2022.
Marko R. Riedel, Maple code for sequence from cited link.
EXAMPLE
Triangle begins:
0;
0, 0;
0, 1, 0;
0, 1, 1, 0;
0, 1, 1, 1, 0;
0, 1, 2, 1, 1, 0;
0, 1, 3, 3, 1, 1, 0;
0, 1, 4, 5, 3, 1, 1, 0;
0, 1, 5, 9, 7, 4, 1, 1, 0;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Marko Riedel, Feb 08 2022
STATUS
approved