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A275875
Subadditive triangle read by rows associated with the Grundy function A025480.
0
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
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
Cf. A025480.
Sequence in context: A070094 A344227 A325521 * A105497 A255809 A332604
KEYWORD
nonn,tabl,more
AUTHOR
N. J. A. Sloane, Aug 14 2016
STATUS
approved