4,3
Column 4 of table in A054528.
Sequence in context: A019611 A138287 A101314 * A151928 A021355 A192034
Adjacent sequences: A054527 A054528 A054529 * A054531 A054532 A054533
nonn
N. J. A. Sloane (njas(AT)research.att.com), Apr 09 2000