A162967 Values taken by the sigma(sigma(n)) function A051027, with repetition, sorted into ascending order.

1, 4, 7, 8, 12, 14, 15, 24, 24, 28, 28, 32, 32, 39, 39, 42, 56, 56, 60, 60, 60, 60, 63, 63, 72, 80, 84, 90, 91, 96, 96, 96, 96, 104, 112, 114, 120, 120, 120, 120, 124, 124, 124, 126, 128, 128, 133, 160, 168, 168, 168, 168, 171, 171, 186, 186, 195, 195, 195, 195, 195

Offset

1,2

Comments

Removal of duplicates generates A070286. - R. J. Mathar, Jul 21 2009

Links

Table of n, a(n) for n=1..61.

Crossrefs

Cf. A007609, A002191. - R. J. Mathar, Jul 21 2009

Sequence in context: A270082 A189223 A060833 * A070286 A324978 A047536

Adjacent sequences: A162964 A162965 A162966 * A162968 A162969 A162970

Keyword

nonn

Author

Jaroslav Krizek, Jul 19 2009

Status

approved