1,1
Cf. A139529, A139530
Sequence in context: A087792 A141436 A073608 this_sequence A096985 A138829 A003265
Adjacent sequences: A155942 A155943 A155944 this_sequence A155946 A155947 A155948
nonn
Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jan 31 2009
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