

A152586


Numbers of the form 13^(2^n) + 2.


0




OFFSET

1,1


COMMENTS

These numbers are divisible by 3. Expanding the binomial (12+1)^(2^n)+1 we
get 12h+1+2 for some h and 12h+3 is divisible by 3.


LINKS

Table of n, a(n) for n=1..7.


FORMULA

a(n) = A176596(n)+2.  R. J. Mathar, Sep 10 2016


PROG

(PARI) g(a, n) = if(a%2, b=2, b=1); for(x=0, n, y=a^(2^x)+b; print1(y", "))


CROSSREFS

Sequence in context: A016225 A058687 A206594 * A339547 A082678 A331516
Adjacent sequences: A152583 A152584 A152585 * A152587 A152588 A152589


KEYWORD

nonn


AUTHOR

Cino Hilliard, Dec 08 2008


STATUS

approved



