login
A066914
Integers of the form (2^(n^3)+1)/(2^(n^2)+1).
0
1, 261633, 1267650562449298664439414784001, 31828687130226288558838390973198420728675356591453158479231648944377496480115651397025793
OFFSET
1,2
COMMENTS
If n is odd (2^(n^3)+1)/(2^(n^2)+1) is an integer.
PROG
(PARI) lista(nn) = {for (n = 1, nn, if (type(v = (2^(n^3)+1)/(2^(n^2)+1)) == "t_INT", print1(v, ", ")); ); } \\ Michel Marcus, Nov 20 2013
CROSSREFS
Sequence in context: A226111 A002272 A172850 * A013694 A358393 A243136
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Jan 23 2002
STATUS
approved