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A006351
Number of series-parallel networks with n labeled edges. Also called yoke-chains by Cayley and MacMahon.
(Formerly M1885)
+0
10
1, 2, 8, 52, 472, 5504, 78416, 1320064, 25637824, 564275648, 13879795712, 377332365568, 11234698041088, 363581406419456, 12707452084972544, 477027941930515456, 19142041172838025216, 817675811320888020992
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.
AT&T Labs Research
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