OFFSET
1,2
COMMENTS
For n > 1, a(n) is a Carmichael number.
a(19) <= 587034735001. - Giovanni Resta, Mar 24 2017
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..138
MATHEMATICA
m=10; s=Table[0, {m}]; c=0; k=0; While[c<m, k++; If[IntegerQ[n = GCD[EulerPhi[k], k-1]/CarmichaelLambda[k]] && n<=m && s[[n]] == 0, c++; s[[n]]=k]]; s (* Amiram Eldar, Jun 26 2019 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Altug Alkan and Thomas Ordowski, Mar 24 2017
EXTENSIONS
a(7)-a(18) from Giovanni Resta, Mar 24 2017
a(19)-a(28) from Amiram Eldar, Jun 26 2019
STATUS
approved