A365721 - OEIS

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A365721

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

6

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

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OFFSET

0,6

LINKS

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

FORMULA

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

a(n) <= A365722(n).

PROG

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

CROSSREFS

Cf. A001221, A356867, A365719, A365722.

Cf. also A069010.

Sequence in context: A303828 A025451 A184257 * A352219 A275656 A228825

Adjacent sequences: A365718 A365719 A365720 * A365722 A365723 A365724

KEYWORD

nonn

AUTHOR

Antti Karttunen, Sep 17 2023

STATUS

approved