A361003 - OEIS

%I #6 Mar 02 2023 06:22:38

%S 1,2,3,4,4,6,5,7,7,8,7,11,8,10,11,12,10,14,11,15,14,14,13,19,15,16,17,

%T 19,16,22,17,21,20,20,21,26,20,22,23,27,22,28,23,27,28,26,25,33,27,30,

%U 29,31,28,34,31,35,32,32,31,41,32,34,37,38,36,40,35,39

%N a(n) = A000005(n) + floor((n-1)/2).

%Y First column of A361001.

%Y Cf. A000005.

%K nonn

%O 1,2

%A _Pontus von Brömssen_, Feb 28 2023