A083923 - OEIS

%I #11 Jan 30 2024 08:23:31

%S 0,1,0,1,0,0,0,1,1,0,0,0,0,0,0,0,0,1,1,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,

%T 0,0,0,0,0,0,0,0,0,0,0,1,1,0,1,1,1,0,0,0,1,1,0,1,1,1,0,1,1,1,1,0,0,0,

%U 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0

%N Characteristic function for A057548.

%H <a href="/index/Ch#char_fns">Index entries for characteristic functions</a>

%F a(n) = 1 if A057515(n)=1 (equivalently: if A072772(n)=0), otherwise 0.

%Y a(n) = A083924(A069770(n)). Used to compute A083925.

%K nonn

%O 0,1

%A _Antti Karttunen_, May 13 2003