0,3
Cf. A042586.
Sequence in context: A203510 A065162 A056262 * A156879 A120264 A185142
Adjacent sequences: A042584 A042585 A042586 * A042588 A042589 A042590
nonn,cofr,easy
N. J. A. Sloane (njas(AT)research.att.com).