OFFSET
1,1
COMMENTS
The only composite term less than 10^11 is 36. - Giovanni Resta, Sep 14 2015
LINKS
Seiichi Manyama, Table of n, a(n) for n = 1..1000
Wikipedia, Euler's totient function
EXAMPLE
3 is in the sequence since phi(13) = phi(3) + 10.
MATHEMATICA
Select[Range@1000, EulerPhi@(# + 10) == EulerPhi[#] + 10 &] (* Vincenzo Librandi, Sep 11 2015 *)
PROG
(Magma) [n: n in [1..1000] | EulerPhi(n+10) eq EulerPhi(n)+10]; // Vincenzo Librandi, Sep 11 2015
(PARI) is(n)=eulerphi(n + 10) == eulerphi(n) + 10 \\ Anders Hellström, Sep 11 2015
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Kevin J. Gomez, Sep 10 2015
STATUS
approved