|
Search: id:A077093
|
|
|
| A077093 |
|
Smallest initial values leading to fixed points listed in A077092. |
|
+0
1
|
|
| 1, 4, 24, 7530, 12100, 32784, 34950, 69480, 121104, 420096
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
EXAMPLE
|
n=12100: FixedPointList={12100,24000,34944},end=34944; n=121104: FixedPointList={121104,268560}, end=268560.
|
|
MATHEMATICA
|
f[x_] := EulerPhi[DivisorSigma[1, x]-EulerPhi[x]] Do[s=NestList[f, n, 100]; s1=Part[s, 99]; s2=Part[s, 100]; If[Equal[s1, s2]&&!PrimeQ[n], Print[{n, s1}]], {n, 1, 1000}] (*n=site if fixed point appears; s1=fixed point*)
|
|
CROSSREFS
|
Cf. A077090-A077100.
Sequence in context: A108185 A110972 A065711 this_sequence A077092 A092435 A058230
Adjacent sequences: A077090 A077091 A077092 this_sequence A077094 A077095 A077096
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Labos E. (labos(AT)ana.sote.hu), Oct 31 2002
|
|
|
Search completed in 0.002 seconds
|
