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A155934
The sequence {k(m)} defined in A005991.
4
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
E. T. Wang and R. K. Guy, Problem E2429, Amer. Math. Monthly, 81 (1974), 1112-1113.
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
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Aug 15 2010
STATUS
approved