A160821 a(1)=2. a(n) = smallest positive integer such that omega(a(n)) = omega(sum{k=1 to n} a(k)), where omega(m) = A001221(m).

2, 2, 3, 2, 2, 2, 3, 3, 4, 2, 2, 2, 2, 14, 2, 2, 4, 8, 3, 3, 4, 2, 8, 2, 10, 4, 4, 2, 4, 2, 4, 6, 2, 4, 2, 4, 8, 6, 4, 2, 10, 2, 4, 2, 4, 8, 6, 4, 2, 4, 2, 6, 10, 6, 2, 4, 2, 4, 8, 2, 6, 2, 5, 6, 6, 3, 20, 2, 6, 6, 2, 4, 2, 4, 6, 6, 2, 10, 2, 4, 2, 4, 8, 10, 2, 14, 2, 6, 2, 4, 6, 2, 6, 4, 2, 6, 4, 2, 12, 4, 8

Offset

1,1

Comments

Sum{k=1 to n} a(k) = A160822(n).

Links

H. v. Eitzen, Table of n, a(n) for n=1,...,10000

Crossrefs

Cf. A001221, A160819, A160822.

Sequence in context: A334216 A100549 A085962 * A300225 A060244 A072814

Adjacent sequences: A160818 A160819 A160820 * A160822 A160823 A160824

Keyword

nonn

Author

Leroy Quet, May 27 2009

Extensions

Extended by Ray Chandler, Jun 15 2009

Status

approved