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A018835 Minimal number of smaller integer-sided squares that tile an n X n square. 4
4, 6, 4, 8, 4, 9, 4, 6, 4, 11, 4, 11, 4, 6, 4, 12, 4, 13, 4, 6, 4, 13, 4, 8, 4, 6, 4, 14, 4, 15, 4, 6, 4, 8, 4, 15, 4, 6, 4, 15, 4, 16, 4, 6, 4, 16, 4, 9, 4, 6, 4, 16, 4, 8, 4, 6, 4, 17, 4, 17, 4, 6, 4, 8, 4 (list; graph; refs; listen; history; text; internal format)
OFFSET
2,1
COMMENTS
Sascha Kurz has found a(n) for n <= 104, and up to this point he observes that a(n) is given by a(n) = min{ a(p) | p prime, p divides n } (cf. A211302). - N. J. A. Sloane, Apr 07 2012
LINKS
Sascha Kurz, Squaring the square with integer linear programming, Journal of Information Processing, Vol. 20, Nr. 3 (2012), Pages 680-685; arXiv:1401.6387 [math.OC], 2014.
CROSSREFS
Cf. A211302.
Sequence in context: A344475 A245556 A256318 * A055166 A202243 A130762
KEYWORD
nonn
AUTHOR
EXTENSIONS
Extended by David W. Wilson, using values from A211302
b-file from Wynn, 2013, added by N. J. A. Sloane, Nov 29 2013
STATUS
approved

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Last modified May 19 14:45 EDT 2024. Contains 372698 sequences. (Running on oeis4.)