A251138 Number of distinct prime factors of A098550(n).

0, 1, 1, 1, 1, 1, 2, 2, 1, 2, 1, 2, 2, 1, 1, 2, 2, 2, 1, 2, 2, 1, 1, 2, 2, 2, 2, 2, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 1, 2, 2, 1, 3, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 1, 2, 2, 2, 1, 1, 2, 2, 1, 2, 2, 2, 2, 2, 3, 2, 3, 2, 2, 2, 2, 3, 1, 3, 2, 2, 2, 2, 2, 2

Offset: 1

Author

Reinhard Zumkeller, Nov 30 2014

Keywords

• nonn

Comments

a(n) = A001221(A098550(n)).

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A001221, A098548, A251139, A251140.

Programs

Haskell

a251138 = a001221 . fromIntegral . a098550