A174787 - OEIS

%I #2 Mar 30 2012 18:53:09

%S 1,1,1,2,2,4,4,6,7,9,9,13,13,15,17,21,21,25,25,29,31,33,33,43,44,46,

%T 48,52,52,58,58,66,68,70,72,85,85,87,89,99,99,105,105,109,113,115,115,

%U 139,140,144,146,150,150,160,162,172,174,176,176,198,198,200,204,220,222

%N Cumulative sums of A174725.

%C By fitting a second order polynomial in Excel to the 77 first terms we get 0,039x^2+0,8859x-3,5396 with the R-square value 0,9974.

%Y Cf. A174725, A174788, A002321.

%K nonn

%O 1,4

%A _Mats Granvik_, Mar 29 2010