OFFSET
1,2
COMMENTS
a(18) > 4*10^12. - Donovan Johnson, Jan 19 2011
Also indices n where A079878(n)=1. - R. J. Mathar, Nov 13 2011
PROG
(ARIBAS): a := 0; for n := 1 to 3000000000 do am := a; a := (am*2 + 1) mod n; if a = 0 then write(n, " "); end; end;
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Jonathan Ayres (JonathanAyres(AT)btinternet.com), Oct 01 2001
EXTENSIONS
More terms from Klaus Brockhaus, Oct 04 2001
Offset corrected and a(15)-a(17) from Donovan Johnson, Jan 19 2011
STATUS
approved