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1, 7, 295, 33251, 7319436, 2669857476, 1459913038884, 1118904543734724, 1145415466062268695, 1510492370204314777345, 2494718462461802382223714
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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REFERENCES
| V. A. Liskovets, The number of initially connected automata, Kibernetika, (Kiev), No3 (1969), 16-19; Engl. transl.: Cybernetics, v.4 (1969), 259-262.
V. A. Liskovets, Exact enumeration of acyclic automata, Proc. 15th Conf. "Formal Power Series and Algebr. Combin. (FPSAC'03)", 2003.
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LINKS
| V. A. Liskovets, Exact enumeration of acyclic deterministic automata,Discrete Appl. Math., 154, No.3 (2006), 537-551.
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FORMULA
| a(n) := A006690(n)/n^3
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CROSSREFS
| Sequence in context: A160072 A137435 A041851 * A096348 A015005 A002437
Adjacent sequences: A082165 A082166 A082167 * A082169 A082170 A082171
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KEYWORD
| easy,nonn
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AUTHOR
| Valery Liskovets (liskov(AT)im.bas-net.by), Apr 09 2003
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