This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A036388 #14 Oct 30 2020 08:45:48 %S A036388 0,0,0,0,1,4,12,30,70,157,348,748,1603,3379,7076,14720,30472,62837, %T A036388 129141,264711,541301,1104733,2250778,4578841,9303111,18880287, %U A036388 38277715,77533844,156924293,317374503,641463198,1295724682 %N A036388 Number of odd split numbers (A036382) of which the binary order (A029837) is <= n, i.e., those which occur below 2^n. %F A036388 Partial sums of A036384. - _Sean A. Irvine_, Oct 29 2020 %e A036388 Below 32 the only odd split number is 21, so a(5) = 1. (In this range there are also 11 primes, 7 true prime powers, 1 composite connected number (15) and 4 even split numbers.) %Y A036388 Cf. A029837, A036378-A036390. %K A036388 nonn,more %O A036388 1,6 %A A036388 _Labos Elemer_ %E A036388 a(9) onward corrected and a(21)-a(32) from _Sean A. Irvine_, Oct 29 2020