OFFSET
1,1
COMMENTS
Powers of 2 starting with 2^2=4 and powers of primes of form 4k+3; none is a hypotenuse. - Ray Chandler, Jul 21 2005
Along with 2, the natural numbers that are Gaussian prime powers. Morgan L. Owens, Nov 21 2014
CROSSREFS
KEYWORD
nonn
AUTHOR
Lekraj Beedassy, Jul 13 2005
EXTENSIONS
Extended by Ray Chandler, Jul 21 2005
STATUS
approved