OFFSET
1,1
COMMENTS
(b^s+1) / (b^r+1) is an integer iff s/r is odd. - Jose Brox (tautocrona(AT)terra.es), Dec 27 2005
PROG
(PARI) for(x=2, 26, for(y=1, x-1, if(Mod(2^x+1, 2^y+1), 0, print1((3^x+1)/(3^y+1)", ")))) \\ The Mod(2^x+1, 2^y+1) is not a bug, since the exponents do not depend on the base in which they are calculated.
CROSSREFS
KEYWORD
nonn
AUTHOR
Jose R. Brox (tautocrona(AT)terra.es), Jan 25 2003
STATUS
approved