A256564 Smallest prime factor of A166133(n).

1, 2, 2, 3, 2, 7, 2, 5, 2, 11, 2, 3, 2, 3, 2, 13, 3, 2, 19, 2, 17, 2, 23, 2, 3, 2, 3, 2, 5, 3, 2, 37, 2, 5, 2, 3, 2, 31, 2, 29, 2, 41, 2, 43, 2, 3, 2, 47, 2, 7, 2, 3, 2, 53, 2, 5, 2, 3, 2, 59, 2, 61, 2, 3, 2, 5, 2, 67, 2, 3, 2, 79, 2, 7, 2, 3, 2, 73, 2, 71

Offset: 1

Author

Reinhard Zumkeller, Apr 02 2015

Keywords

• nonn
• look

Comments

a(n) = A020639(A166133(n)).

Links

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

Crossrefs

Cf. A166133, A020639, A244080.

Programs

Haskell

a256564 = a020639 . a166133