%I #11 Aug 27 2022 04:04:10
%S 1,4,9,16,27,40,57,76,99,128,159,196,237,280,327,380,441,508,579,652,
%T 731,814,903,1000,1101,1204,1311,1420,1533,1660,1791,1928,2067,2216,
%U 2367,2524,2691,2864,3043,3224,3415,3608,3805,4004,4215,4438,4665,4894
%N a(n) = Sum_{k=0..n} A138980(k).
%C By definition, every term is nonprime (i.e., is 1 or composite).
%Y Cf. A138980.
%K nonn
%O 0,2
%A _Leroy Quet_, Apr 05 2008
%E Extended by _R. J. Mathar_, May 21 2010