3,2
G. Kreweras, Les preordres totaux compatibles avec un ordre partiel. Math. Sci. Humaines No. 53 (1976), 5-30.
Sequence in context: A084597 A130877 A140490 this_sequence A074375 A020688 A126619
Adjacent sequences: A079506 A079507 A079508 this_sequence A079510 A079511 A079512
nonn,more
N. J. A. Sloane (njas(AT)research.att.com), Jan 21 2003
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