A133797 Apply the map n -> sigma(phi(n)) to A023758.

0, 1, 1, 3, 3, 3, 12, 7, 7, 12, 15, 15, 15, 28, 15, 72, 31, 31, 60, 31, 72, 91, 63, 63, 124, 63, 168, 91, 312, 127, 127, 252, 127, 360, 195, 312, 255, 255, 255, 508, 255, 744, 403, 728, 255, 1240, 511, 511, 1020, 511, 1512, 819, 1560, 511, 1240, 1860

Offset

1,4

Links

Table of n, a(n) for n=1..56.

Crossrefs

Cf. A023758, A062402.

Sequence in context: A233202 A101480 A156715 * A225073 A152575 A170851

Adjacent sequences: A133794 A133795 A133796 * A133798 A133799 A133800

Keyword

nonn

Author

J. H. Conway, Jan 05 2008

Status

approved