4,2
B. Guiduli and Z. Kiraly, On intersecting hypergraphs, Discr. Math., 182 (1998), 139-151.
Cf. A030071.
Sequence in context: A062546 A019880 A021518 this_sequence A154900 A016630 A099281
Adjacent sequences: A030067 A030068 A030069 this_sequence A030071 A030072 A030073
nonn,frac
N. J. A. Sloane (njas(AT)research.att.com).
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