1,1
Cf. A154600
Sequence in context: A142133 A142217 A142923 this_sequence A142953 A130117 A142034
Adjacent sequences: A154598 A154599 A154600 this_sequence A154602 A154603 A154604
nonn
Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jan 12 2009
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