OFFSET

1,2

LINKS

Robert Israel, 51 terms of the sequence (it is possible that this list is missing some terms, so it is not a b-file)

EXAMPLE

1365 = 3*5*7*13 is a term because d(1365) = 2^4 and 2^16 == 16 (mod 3*5*7*13).

PROG

(PARI) isok(n) = (n%2==1) && (dn=numdiv(n)) && (Mod(2, n)^dn == dn); \\ Michel Marcus, Feb 25 2019

CROSSREFS

KEYWORD

nonn,more

AUTHOR

Altug Alkan, Sep 23 2017

STATUS

approved