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a(n) = s(k), where, at the end of stage n when forming A026400, k is the greatest integer such that s(j) > 0 for all j < k.
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%I #7 Sep 26 2019 19:50:32

%S 1,2,2,3,5,4,6,8,6,8,9,12,11,13,11,16,14,8,17,15,19,21,23,22,20,24,16,

%T 22,27,22,27,32,29,14,31,27,33,38,39,40,34,34,24,44,19,26,47,48,45,46,

%U 51,49,38,54,55,56,39,57,59,46,44,24,39,31,65,66,47,30,50,70,44,30

%N a(n) = s(k), where, at the end of stage n when forming A026400, k is the greatest integer such that s(j) > 0 for all j < k.

%K nonn

%O 1,2

%A _Clark Kimberling_

%E More terms from _Sean A. Irvine_, Sep 26 2019