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

Author

Leroy Quet, May 21 2009

Keywords

• nonn

Crossrefs

Cf. A001222, A160649.

Extensions

Extended by Ray Chandler, Jun 16 2009