A175123 a(n) = (A175122(n+1) - A175122(n))/2.

4, 4, 6, 6, 8, 4, 6, 9, 6, 9, 6, 6, 6, 8, 6, 4, 6, 6, 8, 6, 6, 4, 6, 12, 12, 8, 6, 4, 6, 9, 6, 6, 6, 8, 4, 15, 6, 12, 9, 8, 6, 4, 8, 4, 6, 9, 6, 8, 9, 12, 4, 9, 6, 6, 9, 9, 12, 6, 8, 9, 10, 15, 6, 9, 8, 9, 6, 4, 9, 6, 6, 8, 6, 4, 9, 8, 10, 14, 6, 4, 8, 15, 6, 4, 6, 14, 6, 4, 12, 20, 6, 4, 9, 12, 8, 4, 6, 6

Offset

1,1

Comments

Every term is composite.

Links

Table of n, a(n) for n=1..98.

Crossrefs

Cf. A175122.

Sequence in context: A049751 A196594 A190303 * A276679 A163638 A113523

Adjacent sequences: A175120 A175121 A175122 * A175124 A175125 A175126

Keyword

nonn

Author

Leroy Quet, Feb 15 2010

Extensions

Extended by Ray Chandler, Mar 06 2010

Status

approved