A036387 - OEIS

%I #8 Oct 30 2020 07:47:36

%S 0,0,0,1,1,6,14,35,77,166,346,707,1427,2865,5732,11428,22710,45102,

%T 89442,177329,351374,696093,1378860,2731235,5409540,10715171,21226041,

%U 42050951,83315605,165092603,327175955

%N Number of connected numbers (A029827) with binary order (A029837) <= n.

%e Below 64 the following six composite connected numbers occur: 15,45,51,55,57,63, so a(6)=6.

%Y Cf. A029827, A007053 and A029837, A036378-A036390.

%K nonn,more

%O 1,6

%A _Labos Elemer_

%E a(21)-a(31) from _Sean A. Irvine_, Oct 29 2020