OFFSET
1,1
LINKS
Jinyuan Wang, Table of n, a(n) for n = 1..2000
EXAMPLE
2 is in the sequence since 2 = 1^4 + 1^4.
82 is in the sequence since 82 = 1^4 + 3^4.
MATHEMATICA
Take[Union[Total /@ Tuples[(2 Range[0, 70] - 1)^4, 2]], 70]
CROSSREFS
KEYWORD
nonn
AUTHOR
Wesley Ivan Hurt, Apr 20 2021
STATUS
approved