Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the 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