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A006617 Zarankiewicz's problem.
(Formerly M4083)
0
6, 10, 14, 19, 25, 30, 36, 43, 51, 57 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

COMMENTS

a(n) is the least k such that every n X (n+1) {0,1}-matrix with k ones contains an all ones 2 X 3 submatrix. - Sean A. Irvine, May 17 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=2..11.

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 many-facetted problem of Zarankiewicz, Lect. Notes Math. 110 (1969), 129-148.

CROSSREFS

Sequence in context: A315196 A315197 A315198 * A246803 A140695 A085681

Adjacent sequences:  A006614 A006615 A006616 * A006618 A006619 A006620

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified January 17 16:11 EST 2019. Contains 319235 sequences. (Running on oeis4.)