|
| |
|
|
A038182
|
|
3-infinitary perfect numbers k: 3-i-sigma(k)=2*k where 3-i-sigma(.) = A049418(.).
|
|
1
| | |
|
|
|
OFFSET
| 1,1
|
|
|
LINKS
| J. O. M. Pedersen, Tables of Aliquot Cycles
|
|
|
EXAMPLE
| Factorizations: 2*3, 2^2*7, 2^4*3^3*7, 2^3*3^2*7*13, 2^9*3^4*5*7*19, 2^6*3*5*19*37*73, 2^10*3^6*5*19^2*127*379*757.
|
|
|
CROSSREFS
| Cf. A037445, A038148.
Sequence in context: A066239 A097464 A166998 * A095723 A057246 A154895
Adjacent sequences: A038179 A038180 A038181 * A038183 A038184 A038185
|
|
|
KEYWORD
| nonn,nice
|
|
|
AUTHOR
| Yasutoshi Kohmoto (zbi74583(AT)boat.zero.ad.jp)
|
|
|
EXTENSIONS
| Definition shortened - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 06 2010
|
| |
|
|
