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a(0)=1; for n>0, smallest missing number after A109812(n) has been calculated.
1

%I #3 May 07 2022 15:32:29

%S 1,2,3,3,5,5,6,6,6,7,7,7,7,7,7,7,11,11,11,11,13,13,13,13,13,13,15,15,

%T 22,22,23,23,23,23,23,23,23,23,23,27,27,28,28,28,29,29,29,29,29,29,29,

%U 30,30,30,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31

%N a(0)=1; for n>0, smallest missing number after A109812(n) has been calculated.

%Y Cf. A109812.

%K nonn

%O 0,2

%A _N. J. A. Sloane_, May 07 2022