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%I #5 Jul 10 2021 16:23:45
%S 6,20,30,31,43,44,58,61,73,74,95,110,111,115,139,144,163,171,184,194,
%T 204,208,215,225,241,275,279,284,298,306,318,328,341,344,346,368,380,
%U 381,393,415,421,446
%N a(n) = (A139640(n) - 7)/24.
%Y Cf. A139640.
%K nonn
%O 1,1
%A _Artur Jasinski_, May 26 2008
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