A097502 Least integer m such that there are at least n composite numbers between m and 2*m.

2, 3, 4, 5, 6, 8, 8, 11, 12, 13, 14, 14, 17, 18, 18, 20, 20, 23, 24, 25, 26, 28, 29, 30, 32, 32, 33, 35, 38, 38, 39, 41, 42, 43, 44, 44, 46, 47, 48, 48, 50, 53, 54, 56, 58, 59, 60, 60, 61, 62, 62, 63, 65, 67, 68, 68, 71, 72, 72, 73, 74, 74, 77, 78, 80, 80, 81, 83, 84, 85, 86, 88

Offset

1,1

Comments

a(n) = Min{m: n <= #{x composite: m<=x<=2*m}}.

Links

Table of n, a(n) for n=1..72.

Crossrefs

Cf. A059316, A002808.

Sequence in context: A003965 A351988 A214964 * A318122 A265568 A265552

Adjacent sequences: A097499 A097500 A097501 * A097503 A097504 A097505

Keyword

nonn

Author

Reinhard Zumkeller, Aug 25 2004

Status

approved