

A006622


Zarankiewicz's problem.
(Formerly M4826)


0




OFFSET

3,1


COMMENTS

a(n) is the least k such that every n X (n+1) {0,1}matrix with k ones contains an all ones 3 X 4 submatrix.  Sean A. Irvine, May 18 2017


REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).


LINKS

Table of n, a(n) for n=3..7.
R. K. Guy, A problem of Zarankiewicz, Research Paper No. 12, Dept. of Math., Univ. Calgary, Jan. 1967. [Annotated and scanned copy, with permission]
R. K. Guy, A manyfacetted problem of Zarankiewicz, Lect. Notes Math. 110 (1969), 129148.


CROSSREFS

Sequence in context: A325387 A272860 A071354 * A124269 A179192 A112054
Adjacent sequences: A006619 A006620 A006621 * A006623 A006624 A006625


KEYWORD

nonn,more


AUTHOR

N. J. A. Sloane.


STATUS

approved



