login
Numbers n such that there is no cubefree number that is the sum of two nonzero squares in exactly n ways.
0

%I #7 Jun 29 2016 00:04:58

%S 7,10,11,15,17,19,20,21,22,23,25,26,28,29,30,31,33,34,35,37,38,39,42,

%T 43,44,45,46,47,49,50,51,52,53,55,56,57,58,59,60,61,62,63,65,66,67,68,

%U 69,70,71,73,74,75,76,77,78,79,80,82,83,84,85,86,87,88,89,90,91,92,93,94,95,97,98,99,100

%N Numbers n such that there is no cubefree number that is the sum of two nonzero squares in exactly n ways.

%Y Cf. A000404, A004709.

%K nonn

%O 1,1

%A _Altug Alkan_, Jun 13 2016

%E Terms checked by _Giovanni Resta_, Jun 13 2016