%I #19 Feb 19 2021 10:40:49
%S 0,0,1,4,12,30,69,150,317,659,1361,2784,5686,11557,23445,47472,95991,
%T 193891,391266,788979,1589856,3201863,6445059,12967425,26080302,
%U 52434693,105386552,211751544,425359720,854245385,1715204991
%N Number of (odd and even) split numbers (A036382) below 2^n.
%C Equivalently, number of split numbers (A036382) with binary order (A029837) <= n.
%C Partial sums of A036385. - _Sean A. Irvine_, Oct 29 2020
%e The 12 odd and even split numbers below 32 are as follows: 6, 10, 12, 14, 18, 20, 21, 22, 24, 26, 28, 30.
%Y Cf. A029837 (ceiling(log_2(n))), A036382.
%K nonn,more
%O 1,4
%A _Labos Elemer_
%E Definition rephrased by _M. F. Hasler_, Apr 24 2017
%E a(21)-a(31) from _Sean A. Irvine_, Oct 29 2020