A365721 The number of distinct prime factors in A356867(1+n), where A356867 is Sycamore's Doudna variant D(3).

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, 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, 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

Offset: 0

Author

Antti Karttunen, Sep 17 2023

Keywords

• nonn

Links

• Antti Karttunen, Table of n, a(n) for n = 0..19683

Crossrefs

Cf. A001221, A356867, A365719, A365722.

Cf. also A069010.

Programs

PARI

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

Formula

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

a(n) <= A365722(n).