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%I #3 Mar 30 2012 18:40:29
%S 10,12,13,13,14,15,15,15,16,16,16,16,16,17,17,17,17,17,18,18,18,18,18,
%T 19,19,19,19,19,19,19,19,19,20,20,20,20,20,20,20,20,20,20,20,21,21,21,
%U 21,21,21,21,21,21,21,21,21,22,22,22,22,22,22
%N A000934(A000934(n)).
%F a(n) = floor( (7+sqrt(1+48*floor( (7+sqrt(1+48*n))/2 )))/2 ).
%e a(0) = 10 because A000934(0) = 4 and A000934(4) = 10.
%e a(1) = 12 because A000934(1) = 7 and A000934(7) = 12.
%Y Cf. A000934.
%K easy,nonn
%O 0,1
%A _Jonathan Vos Post_, Aug 26 2005
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