OFFSET
1,1
LINKS
Chai Wah Wu, Table of n, a(n) for n = 1..34042
EXAMPLE
4104 = 18^3 + (-12)^3 = 16^3 + 2^3 = 15^3 + 9^3, so 4104 is in the sequence.
PROG
(PARI) is(n)=#thue(thueinit(z^3+1), n)>4 \\ Ralf Stephan, Oct 18 2013
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved