OFFSET
1,1
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
MATHEMATICA
Reap[Do[If[Reduce[p == a^2 + b^4, {a, b}, Integers] === False, Sow[p]], {p, Prime[Range[80]]}]][[2, 1]] (* Jean-François Alcover, Jan 31 2018 *)
PROG
(Haskell)
a256863 n = a256863_list !! (n-1)
a256863_list = map a000040 $ filter ((== 0) . a256852) [1..]
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Apr 11 2015
STATUS
approved