1,5
Cf. A163259.
Sequence in context: A078323 A099255 A198460 * A073112 A070425 A163842
Adjacent sequences: A163257 A163258 A163259 * A163261 A163262 A163263
nonn
Mats Granvik (mats.granvik(AT)abo.fi), Jul 23 2009
Corrected a(20). Mats Granvik (mats.granvik(AT)abo.fi), Jul 24 2009