A155934 The sequence {k(m)} defined in A005991.

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, 7, 7, 7, 7, 7, 7, 7, 7

Offset

2,1

Comments

All known terms (n=2 to n=43) agree with A368941(n). - Eric W. Weisstein, Apr 16 2019 and Jan 10 2024

Links

Table of n, a(n) for n=2..43.

E. T. Wang and R. K. Guy, Problem E2429, Amer. Math. Monthly, 81 (1974), 1112-1113.

Index entries for sequences related to binary matrices

Formula

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

Crossrefs

Cf. A003509, A005991, A368941.

Sequence in context: A046925 A090529 A297212 * A251719 A130822 A194220

Adjacent sequences: A155931 A155932 A155933 * A155935 A155936 A155937

Keyword

nonn,more

Author

N. J. A. Sloane, Aug 15 2010

Status

approved