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A092797
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Number of connected relations.
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0
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1, 667, 108817, 10796275, 858251401, 61283936827, 4147211888737, 273109341611395, 17736960725057401, 1143745441025278987, 73483870162431314257, 4712360023676936085715, 301901195708380781658601
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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REFERENCES
| G. Kilibarda and V. Jovovic, "Enumeration of some classes of T_0-hypergraphs", in preparation, 2004.
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FORMULA
| 64^n-6*33^n-15*19^n+30*18^n-10*15^n+120*12^n-120*11^n+30*10^n-270*9^n+360*8^n-120*7^n.
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CROSSREFS
| Cf. A005333, A001047, A002501, A002502, A093732, A093733.
Sequence in context: A172922 A046694 A138563 * A105212 A067875 A172963
Adjacent sequences: A092794 A092795 A092796 * A092798 A092799 A092800
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KEYWORD
| nonn
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AUTHOR
| Goran Kilibarda, Vladeta Jovovic (vladeta(AT)eunet.rs), Apr 15 2004
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