1,1
Cf. A003672.
Sequence in context: A125125 A016624 A021263 * A016627 A175184 A019604
Adjacent sequences: A081800 A081801 A081802 * A081804 A081805 A081806
cons,nonn
Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 10 2003