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

1,7

Comments

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

Links

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

Prog

(Haskell)
a251138 = a001221 . fromIntegral . a098550

Crossrefs

Cf. A001221, A098548, A251139, A251140.

Sequence in context: A258124 A264032 A366597 * A144462 A370559 A112104

Adjacent sequences: A251135 A251136 A251137 * A251139 A251140 A251141

Keyword

nonn

Author

Reinhard Zumkeller, Nov 30 2014

Status

approved