A160820 -id:A160820

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A160819

a(1)=2. a(n) = smallest positive integer such that Omega(a(n)) = Omega(sum{k=1 to n} a(k)), where Omega(m) = A001222(m).

+10
3

2, 3, 2, 14, 2, 10, 6, 2, 2, 6, 6, 8, 6, 2, 2, 4, 2, 6, 6, 4, 2, 8, 2, 2, 6, 4, 4, 6, 2, 10, 4, 8, 6, 10, 9, 3, 4, 9, 3, 2, 4, 6, 2, 4, 4, 12, 2, 4, 2, 2, 6, 6, 6, 6, 8, 12, 4, 6, 4, 4, 6, 2, 2, 6, 4, 4, 14, 14, 6, 4, 2, 4, 2, 4, 2, 8, 2, 4, 10, 4, 2, 4, 4, 2, 2, 6, 8, 10, 6, 15, 8, 4, 4, 5, 6, 4, 2, 6, 6

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OFFSET

1,1

COMMENTS

sum{k=1 to n} a(k) = A160820(n).

LINKS

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

CROSSREFS

Cf. A001222, A160820, A160821.

KEYWORD

nonn

AUTHOR

Leroy Quet, May 27 2009

EXTENSIONS

Extended by Ray Chandler, Jun 15 2009

STATUS

approved

A160822

a(1)=2. For n >= 2, a(n) = smallest integer > a(n-1) such that omega(a(n)) = omega(a(n)-a(n-1)), where omega(m) = A001221(m).