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Numbers of the form 6^x + y^6 with x, y >= 0
2

%I #7 Nov 27 2014 04:06:55

%S 1,2,6,7,36,37,65,70,100,216,217,280,730,735,765,945,1296,1297,1360,

%T 2025,4097,4102,4132,4312,5392,7776,7777,7840,8505,11872,15626,15631,

%U 15661,15841,16921,23401,46656,46657,46662,46692,46720,46872,47385,47952

%N Numbers of the form 6^x + y^6 with x, y >= 0

%C No terms are divisible by 19, 23, 43, 47, 67, 71.

%e 37 is in this sequence because 6^2+1^6 = 37.

%e 735 is in this sequence because 6^1+3^6 = 735.

%t nn=10; Union[Select[Flatten[Table[6^x + y^6, {x, 0, nn}, {y, 0, nn}]], #<=nn^6 &]]

%Y Cf. similar sequences listed in A250482.

%K nonn

%O 1,2

%A _Vincenzo Librandi_, Nov 27 2014