Question

1,4,9,16,25,1,16,81,256,625...

Answer 1

$1^{2}=1$
$2^{2}=4$
$3^{2}=9$
$4^{2}=16$
$5^{2}=25$

$1^{4}=1$
$2^{4}=16$
$3^{4}=81$
$4^{4}=256$
$5^{4}=625$