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A185099 Indices k for which A185079(k) > k^2. 1
18, 21, 22, 24, 30, 36, 40, 48, 52, 56, 70, 80, 82, 85, 86, 90, 93, 94, 100, 102, 105, 115, 116, 118, 129, 132, 135, 165, 177, 180, 182, 183, 189, 201, 203, 205, 210, 213, 214, 216, 217, 224 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

For other k>=2, except for 6, 60, 120, 360, 816, 6120, 8280, ..., we have A185079(k) < k^2. In particular, all terms of the sequence are composite numbers. Conjecture. The sequence is infinite.

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..3000

FORMULA

lim {n tends to infty}a(n)/n^2=1.

CROSSREFS

Cf. A185079.

Sequence in context: A066240 A115747 A303686 * A216295 A217058 A172052

Adjacent sequences:  A185096 A185097 A185098 * A185100 A185101 A185102

KEYWORD

nonn

AUTHOR

Vladimir Shevelev, Feb 18 2011

EXTENSIONS

Corrected by R. J. Mathar, Feb 19 2011

STATUS

approved

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Last modified August 9 02:14 EDT 2020. Contains 336310 sequences. (Running on oeis4.)