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A284975 a(n) is the number of self-conjugate partitions of n which represent Chomp positions with Sprague-Grundy value 4. 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 2, 0, 3, 0, 1, 0, 2, 2, 2, 0, 6, 0, 2, 5, 5, 6, 8, 5, 6, 6, 6, 7, 8, 12, 10, 10, 16, 12, 20, 12, 17, 22, 16, 27, 21, 34, 25, 35, 29, 43, 42, 48, 38, 67 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,26

COMMENTS

The number of all Chomp positions with Sprague-Grundy value 4 are given in A284690.

REFERENCES

P. M. Grundy, Mathematics and games, Eureka 2 (1939), 6-8; reprinted (1964), Eureka 27, 9-11.

R. Sprague, Über mathematische Kampfspiele, Tohoku Math. J. 41 (1936), 438-444.

R. Sprague, Über zwei Abarten von Nim, Tohoku Math. J. 43 (1937), 351-354.

LINKS

Table of n, a(n) for n=1..69.

Thomas S. Ferguson, Game Theory (lecture notes + exercise questions for a course on Combinatorial Game Theory).

P. M. Grundy, Mathematics and games, Eureka (The Archimedeans' Journal), No. 2, 1939, pp. 6-8. [Annotated scanned copy. My former colleague and coauthor Florence Jessie MacWilliams (nee Collinson), who was a student at Cambridge University in 1939, gave me this journal. - N. J. A. Sloane, Nov 17 2018]

CROSSREFS

Cf. A112471, A112472, A112473.

Sequence in context: A240672 A352288 A243016 * A219202 A341980 A218031

Adjacent sequences:  A284972 A284973 A284974 * A284976 A284977 A284978

KEYWORD

nonn

AUTHOR

Thomas J Wolf, Apr 06 2017

STATUS

approved

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Last modified September 26 10:50 EDT 2022. Contains 356997 sequences. (Running on oeis4.)