A160650 a(n) = A001222(A160649(n)) = A160649(n+1) - A160649(n); where A001222(m) is the sum of prime-factorization exponents of m (or, A001222(m) is the number of primes dividing m, counted with multiplicity).

1, 1, 2, 2, 3, 1, 3, 2, 1, 3, 2, 1, 4, 3, 1, 5, 1, 2, 4, 3, 1, 5, 1, 4, 2, 4, 6, 3, 1, 2, 3, 1, 5, 2, 2, 1, 4, 2, 6, 3, 3, 5, 1, 3, 3, 5, 3, 7, 4, 1, 4, 6, 4, 3, 1, 2, 6, 2, 5, 1, 3, 2, 1, 5, 2, 2, 4, 1, 2, 4, 5, 2, 3, 4, 2, 6, 3, 4, 1, 3, 1, 4, 3, 1, 3, 3, 4, 5, 1, 3, 3, 5, 1, 5, 3, 2, 5, 3, 7, 2, 4, 2, 2, 2, 1

Offset

1,3

Links

Table of n, a(n) for n=1..105.

Crossrefs

Cf. A001222, A160649.

Sequence in context: A190263 A144911 A233431 * A304092 A339669 A171691

Adjacent sequences: A160647 A160648 A160649 * A160651 A160652 A160653

Keyword

nonn

Author

Leroy Quet, May 21 2009

Extensions

Extended by Ray Chandler, Jun 16 2009

Status

approved