_Antti Karttunen (His-Firstname.His-Surname(AT)gmail.com), _, Sep 19 2009

OEIS Server: https://oeis.org/edit/global/881

A. Karttunen, <a href="="/A165406/b165406.txt">Table of n, a(n) for n = 0..609</a>

nonn,base,new

Sequence A165404 shown in binary, or equivalently, sequence A163901 in quaternary base.

0, 1, 100, 110, 111, 10000, 10010, 10011, 11000, 11001, 11100, 11110, 11111, 1000000, 1000010, 1000011, 1001000, 1001001, 1001100, 1001110, 1001111, 1100000, 1100001, 1100100, 1100110, 1100111, 1110000, 1110010, 1110011

0,3

A. Karttunen, <a href="b165406.txt">Table of n, a(n) for n = 0..609</a>

a(n) = A007088(A165404(n)) = A007090(A163901(n)). For n>0, A147600(n-1) seems to give the number of terms with n binary digits.

nonn,base

Antti Karttunen (His-Firstname.His-Surname(AT)gmail.com), Sep 19 2009

approved