1,1
Cf. A003672.
Sequence in context: A125125 A016624 A021263 this_sequence A016627 A019604 A106291
Adjacent sequences: A081800 A081801 A081802 this_sequence A081804 A081805 A081806
cons,nonn
Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 10 2003
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