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A076083 Consider all composite numbers between prime(n) and prime(n+1); take those with smallest number of divisors; a(n) is the smallest of them. 3
4, 6, 9, 12, 14, 18, 21, 25, 30, 33, 38, 42, 46, 49, 55, 60, 62, 69, 72, 74, 82, 85, 91, 98, 102, 106, 108, 111, 121, 129, 133, 138, 141, 150, 155, 158, 166, 169, 177, 180, 183, 192, 194, 198, 201, 213, 226, 228, 230, 235, 240, 247, 253, 259, 265, 270, 274, 278 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

Harvey P. Dale, Table of n, a(n) for n = 2..1000

MATHEMATICA

snd[lst_]:=First[SortBy[lst, DivisorSigma[0, #]&]]; snd/@(Range[#[[1]]+1, #[[2]]- 1]&/@Partition[Prime[Range[2, 60]], 2, 1]) (* Harvey P. Dale, Jul 06 2014 *)

PROG

(PARI) for(n=2, 100, m=99999:r=0:for(k=prime(n)+1, prime(n+1)-1, if(!isprime(k), if(numdiv(k)<m, r=k:m=numdiv(k)))):print1(r", "))

CROSSREFS

Cf. A076082.

Sequence in context: A060644 A122550 A191407 * A094202 A310666 A304231

Adjacent sequences:  A076080 A076081 A076082 * A076084 A076085 A076086

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Oct 07 2002

EXTENSIONS

More terms from Ralf Stephan, Mar 23 2003

STATUS

approved

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Last modified May 19 22:32 EDT 2019. Contains 323411 sequences. (Running on oeis4.)