OFFSET
0,1
COMMENTS
See Levine 2004/2006 for definition. His Theorem 3.6 shows that there is a one-to-one correspondence between fractal sequences and subadditive triangles.
REFERENCES
L. Levine, Fractal sequences and restricted Nim, Ars Combin. 80 (2006), 113-127.
LINKS
L. Levine, Fractal sequences and restricted Nim, arXiv:math/0409408 [math.CO], 2004.
EXAMPLE
Triangle begins:
2,
1,3,
1,2,3,
1,1,2,4,
1,1,2,2,4,
1,1,1,2,3,4,
1,1,1,2,2,3,4,
1,1,1,1,2,2,3,5,
1,1,1,1,2,2,2,3,5,
1,1,1,1,1,2,2,3,3,5,
...
CROSSREFS
KEYWORD
AUTHOR
N. J. A. Sloane, Aug 14 2016
STATUS
approved