

A001197


Zarankiewicz's problem k(n,2).
(Formerly M3300 N1330)


15



1, 4, 7, 10, 13, 17, 22, 25, 30, 35, 40, 46, 53, 57, 62, 68, 75, 82, 89, 97, 106
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OFFSET

1,2


REFERENCES

L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 291.
R. K. Guy, A problem of Zarankiewicz, in P. ErdÅ‘s and G. Katona, editors, Theory of Graphs (Proceedings of the Colloquium, Tihany, Hungary), Academic Press, NY, 1968, pp. 119150.
Richard J. Nowakowski, Zarankiewicz's Problem, PhD Dissertation, University of Calgary, 1978, page 202.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
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=1..21.
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.


FORMULA

a(n) = A072567(n) + 1 for n>=2.  Rob Pratt, Aug 09 2019


CROSSREFS

Cf. A001198, A072567.
Sequence in context: A143455 A310684 A087065 * A276874 A310685 A310686
Adjacent sequences: A001194 A001195 A001196 * A001198 A001199 A001200


KEYWORD

nonn,more


AUTHOR

N. J. A. Sloane


EXTENSIONS

Nowakowski's thesis, directed by Guy, corrected Guy's value for a(15) and supplied a(16)a(21) entered by Don Knuth, Aug 13 2014


STATUS

approved



