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A262042 First column of A261987. 1
4, 8, 25, 91, 115, 527, 527, 1331, 1331, 4301, 15689, 14111, 19337, 31427, 175151, 175151, 175151, 175151, 175151 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The initial terms of the set of n coprime composite numbers that minimizes the difference between the first and last terms, and then minimizes the average of the terms.

LINKS

Table of n, a(n) for n=1..19.

CROSSREFS

Subsequence of A002808.

First column of A261987.

Cf. A264482, A264483.

Sequence in context: A107840 A046736 A174171 * A227644 A074188 A126733

Adjacent sequences:  A262039 A262040 A262041 * A262043 A262044 A262045

KEYWORD

nonn,more

AUTHOR

Max Barrentine, Oct 02 2015

STATUS

approved

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Last modified August 12 09:17 EDT 2020. Contains 336438 sequences. (Running on oeis4.)