1,1
See comment in A066232.
(PARI): for(n=3, 10^9, if(eulerphi(n)==eulerphi(n-2)-eulerphi(n-1) && !issquarefree(n), print1(n, ", ")))
Sequence in context: A205752 A205474 A171103 * A109030 A093223 A183601
Adjacent sequences: A066356 A066357 A066358 * A066360 A066361 A066362
nonn
Jason Earls (zevi_35711(AT)yahoo.com), Dec 20 2001