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 A036387 #8 Oct 30 2020 07:47:36 %S A036387 0,0,0,1,1,6,14,35,77,166,346,707,1427,2865,5732,11428,22710,45102, %T A036387 89442,177329,351374,696093,1378860,2731235,5409540,10715171,21226041, %U A036387 42050951,83315605,165092603,327175955 %N A036387 Number of connected numbers (A029827) with binary order (A029837) <= n. %e A036387 Below 64 the following six composite connected numbers occur: 15,45,51,55,57,63, so a(6)=6. %Y A036387 Cf. A029827, A007053 and A029837, A036378-A036390. %K A036387 nonn,more %O A036387 1,6 %A A036387 _Labos Elemer_ %E A036387 a(21)-a(31) from _Sean A. Irvine_, Oct 29 2020