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Characteristic function of A378530.
2

%I #8 Dec 02 2024 10:11:16

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

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

%U 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0

%N Characteristic function of A378530.

%H Antti Karttunen, <a href="/A378529/b378529.txt">Table of n, a(n) for n = 1..108045</a>

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

%F a(n) = A378448(n)*A378449(n).

%Y Characteristic function of A378530, which is the intersection A064771 and A083209.

%Y Cf. A033630, A083206, A378448, A378449, A378604.

%K nonn,new

%O 1

%A _Antti Karttunen_, Dec 01 2024