A067810 Composite n such that sigma(2*n) < prime(n).

25, 26, 32, 34, 35, 38, 44, 46, 49, 50, 51, 52, 55, 56, 57, 58, 62, 64, 65, 68, 69, 70, 74, 75, 76, 77, 78, 80, 81, 82, 85, 86, 87, 88, 91, 92, 93, 94, 95, 98, 99, 100, 102, 104, 106, 110, 111, 112, 114, 115, 116, 117, 118, 119, 121, 122, 123, 124, 125, 128, 129, 130

Offset

1,1

Links

Table of n, a(n) for n=1..62.

Crossrefs

Sequence in context: A132415 A292931 A374910 * A111168 A349865 A195331

Adjacent sequences: A067807 A067808 A067809 * A067811 A067812 A067813

Keyword

nonn

Author

Benoit Cloitre, Feb 07 2002

Status

approved