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%I #7 Apr 24 2022 09:04:53
%S 0,0,0,0,1,0,1,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,
%T 0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,
%U 0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,1,0
%N Characteristic function of greater twin primes: a(n) = 1 if both n and n-2 are primes, otherwise 0.
%H Antti Karttunen, <a href="/A353464/b353464.txt">Table of n, a(n) for n = 1..100000</a>
%H <a href="/index/Ch#char_fns">Index entries for characteristic functions</a>
%F a(n) = A353463(n-2) = A010051(n) * A010051(n-2).
%o (PARI) A353464(n) = (isprime(n) && isprime(n-2));
%Y Characteristic function of A006512.
%Y Cf. A010051, A353463.
%K nonn
%O 1
%A _Antti Karttunen_, Apr 22 2022
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