1,1
Cf. A139640.
Sequence in context: A006039 A064771 A006036 this_sequence A031005 A106528 A031068
Adjacent sequences: A140735 A140736 A140737 this_sequence A140739 A140740 A140741
nonn
Artur Jasinski (grafix(AT)csl.pl), May 26 2008
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