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Positive numbers of the form 6^x-y^2 with repetition.
0

%I #2 Mar 30 2012 17:26:26

%S 1,2,5,6,11,20,20,27,32,32,35,36,47,71,72,95,116,135,140,152,167,180,

%T 191,200,207,207,207,212,215,216,272,335,380,396,455,512,551,567,620,

%U 671,720,720,767,812,855,887,896,935,972,1007,1040,1052,1071,1100,1127

%N Positive numbers of the form 6^x-y^2 with repetition.

%Y Cf. A051217, A134989.

%K nonn

%O 1,2

%A _Zak Seidov_, Feb 06 2008