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%I #19 Jan 11 2024 16:46:50
%S 2,3,3,3,3,4,4,4,4,4,4,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,
%T 7,7,7,7,7,7,7,7
%N The sequence {k(m)} defined in A005991.
%C All known terms (n=2 to n=43) agree with A368941(n). - _Eric W. Weisstein_, Apr 16 2019 and Jan 10 2024
%H E. T. Wang and R. K. Guy, <a href="http://www.jstor.org/stable/2319052">Problem E2429</a>, Amer. Math. Monthly, 81 (1974), 1112-1113.
%H <a href="/index/Mat#binmat">Index entries for sequences related to binary matrices</a>
%F n^(1/2) - n^(5/16) < a(n) <= floor((1/2) * (3 + sqrt(4*n-3))) [from Wang and Guy]. - _Sean A. Irvine_, Jun 06 2015
%Y Cf. A003509, A005991, A368941.
%K nonn,more
%O 2,1
%A _N. J. A. Sloane_, Aug 15 2010
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