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A092795
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Number of connected relations.
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0
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1, 67, 1993, 43891, 836521, 14764627, 249723433, 4123297651, 67157947561, 1085384064787, 17464790421673, 280328391247411, 4493290901135401, 71964955947764947, 1152089156508284713, 18439265231953981171
(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
| 16^n-4*9^n-3*7^n+12*6^n-6*5^n.
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CROSSREFS
| Cf. A005333, A001047, A002501, A002502, A093732, A093733.
Sequence in context: A032651 A157665 A078850 * A017783 A017730 A078953
Adjacent sequences: A092792 A092793 A092794 * A092796 A092797 A092798
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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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