A175121 a(n) = A175120(n+1) - A175120(n) - 1.

4, 9, 25, 9, 25, 9, 49, 9, 49, 27, 35, 49, 33, 25, 9, 25, 9, 121, 15, 35, 25, 21, 35, 49, 15, 25, 27, 25, 15, 143, 25, 9, 49, 21, 25, 33, 35, 25, 9, 25, 9, 121, 27, 49, 21, 49, 21, 25, 21, 25, 9, 25, 33, 25, 9, 25, 27, 35, 49, 15, 121, 15, 25, 9, 25, 9, 121, 15, 35, 35, 221, 25, 21

Offset

1,1

Comments

Every term is a composite.

Links

Table of n, a(n) for n=1..73.

Crossrefs

A175120

Sequence in context: A128416 A353978 A334656 * A133905 A131826 A366786

Adjacent sequences: A175118 A175119 A175120 * A175122 A175123 A175124

Keyword

nonn

Author

Leroy Quet, Feb 14 2010

Extensions

More terms from R. J. Mathar, Feb 21 2010

Status

approved