1,1
Cf. A002326 A141229 A001122 A006694.
Sequence in context: A008920 A087638 A064604 this_sequence A107600 A008528 A020881
Adjacent sequences: A140195 A140196 A140197 this_sequence A140199 A140200 A140201
nonn
Vladimir Shevelev (shevelev(AT)bgu.ac.il), Jun 15 2008
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