A161358 Shorter side (x) of inner rectangle described in A168339.

1, 1, 2, 2, 3, 3, 3, 3, 3, 4, 3, 4, 5, 4, 5, 4, 5, 5, 5, 5, 6, 5, 5, 6, 7, 6, 6, 7, 6, 6, 7, 7, 6, 7, 7, 8, 7, 7, 7, 8, 9, 7, 8, 8, 9, 7, 8, 8, 9, 9, 8, 8, 7, 9, 10, 8, 9, 9, 9, 10, 11, 9, 9, 10, 10, 11, 9, 9, 10, 10, 11, 11, 10, 10, 10, 11, 11, 12, 10, 10, 9, 11, 11, 12, 13, 9, 11, 11, 12, 12, 13, 11, 11, 11, 12, 12

Offset: 1

Author

R. H. Hardin and N. J. A. Sloane, Nov 27 2009

Keywords

• nonn

Crossrefs

Cf. A161357, A168339. Equals A145288(n)-2.

Extensions

Corrected definition and flipped sign in the formula - R. J. Mathar, Mar 06 2010