A081166 Number of distinct primes dividing A060114(n).

0, 0, 1, 2, 2, 3, 3, 3, 4, 5, 6, 12, 16, 20, 31, 50, 70, 106, 143

Offset

0,4

Links

Table of n, a(n) for n=0..18.

Crossrefs

a(n) = A001221(A060114(n)). Cf. A081165.

Sequence in context: A227398 A003105 A240856 * A173910 A036846 A227396

Adjacent sequences: A081163 A081164 A081165 * A081167 A081168 A081169

Keyword

nonn

Author

Antti Karttunen & Wouter Meeussen Mar 10 2003

Status

approved