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A115320 Triangle read by rows. Let L(m,n) = largest integer such that if each symbol in an m X n array appears at most L(m,n) times, then the array must have a transversal. Values are shown in this order: L(m,n), n>=2, m=n, n-1, n-2, ...,2. 1
1, 2, 5, 3, 3, 7, 3, 4, 7, 9, 4, 5, 5, 8, 11 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

2,2

REFERENCES

S. K. Stein and S. Szabo, The number of distinct symbols in sections of rectangular arrays, Discr. Math., 306 (2006), 254-261.

LINKS

Table of n, a(n) for n=2..16.

EXAMPLE

Array begins

1

5 2

7 3 3

9 7 4 3

11 8 5 5 4

13 10 8 ...

CROSSREFS

See A115321 for transposed array.

Sequence in context: A185581 A151960 A281300 * A073480 A077057 A030660

Adjacent sequences:  A115317 A115318 A115319 * A115321 A115322 A115323

KEYWORD

nonn,tabl

AUTHOR

N. J. A. Sloane, Mar 07 2006

STATUS

approved

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Last modified November 13 23:48 EST 2019. Contains 329106 sequences. (Running on oeis4.)