A284969 - OEIS

A284969

a(n) is the number of self-conjugate partitions of n which represent Chomp positions with Sprague-Grundy value 2.

0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 2, 0, 3, 0, 4, 0, 6, 0, 7, 0, 9, 0, 11, 0, 13, 0, 15, 0, 18, 0, 20, 0, 23, 0, 26, 0, 29, 0, 32, 0, 36, 0, 39, 0, 43, 0, 47, 0, 51, 0, 55, 0, 60, 0, 64, 0, 69, 0, 74, 0, 79, 0, 84, 0, 90

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,15

COMMENTS

The number of all Chomp positions with Sprague-Grundy value 2 are given in A284688.

REFERENCES

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

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]

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.

CROSSREFS

Cf. A112471, A112472, A112473, A284688.

Sequence in context: A008809 A008821 A194749 * A097852 A008801 A073739

Adjacent sequences: A284966 A284967 A284968 * A284970 A284971 A284972

KEYWORD

nonn

AUTHOR

Thomas J Wolf, Apr 06 2017

STATUS

approved