1,2
Cf. A003086.
Sequence in context: A013776 A022019 A010045 this_sequence A092844 A038394 A068110
Adjacent sequences: A052148 A052149 A052150 this_sequence A052152 A052153 A052154
nonn
Vladeta Jovovic (vladeta(AT)eunet.rs), Jan 24 2000
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