OFFSET
1,3
LINKS
Alois P. Heinz, Table of n, a(n) for n = 1..10000 (first 300 terms from Vincenzo Librandi)
MAPLE
b:= proc(n, i, t) option remember; n=0 or i>0 and t>0
and (b(n, i-1, t) or i^5<=n and b(n-i^5, i, t-1))
end:
a:= proc(n) option remember; local k;
for k from 1+ `if`(n=1, -1, a(n-1))
while not b(k, iroot(k, 5), 5) do od; k
end:
seq(a(n), n=1..50); # Alois P. Heinz, Sep 16 2016
MATHEMATICA
Select[Table[n, {n, 0, 1200}], Length[PowersRepresentations[#, 5, 5]] > 0 &] (* Vladimir Joseph Stephan Orlovsky, Jul 19 2011 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved