A365721 - OEIS

%I #9 Sep 17 2023 11:25:19

%S 0,1,1,1,1,2,2,1,1,1,2,2,1,2,2,2,1,2,2,2,3,1,2,2,2,1,1,1,2,2,2,2,3,3,

%T 2,2,1,2,2,2,3,3,2,2,2,2,2,3,1,2,2,2,1,2,2,3,3,2,2,3,3,2,3,1,3,2,2,3,

%U 3,2,2,2,2,2,3,1,2,2,2,1,1,1,2,2,2,2,3,3,2,2,2,3,3,2,3,3,3,2,3,3,3,4,2,3,3,3

%N The number of distinct prime factors in A356867(1+n), where A356867 is Sycamore's Doudna variant D(3).

%H Antti Karttunen, <a href="/A365721/b365721.txt">Table of n, a(n) for n = 0..19683</a>

%F a(n) = A001221(A356867(1+n)) = A001221(A365719(n)).

%F a(n) <= A365722(n).

%o (PARI) A365721(n) = omega(A356867(1+n)); \\ Uses also the program given in A356867.

%Y Cf. A001221, A356867, A365719, A365722.

%Y Cf. also A069010.

%K nonn

%O 0,6

%A _Antti Karttunen_, Sep 17 2023