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A058475
Total number of interior nodes in all series-parallel networks with n labeled edges, multiple edges not allowed.
+0
3
0, 0, 1, 5, 41, 394, 4704, 65386, 1049754, 19032392, 385419072, 8615947592, 210831826952, 5604404196832, 160834760288864, 4955867959526784, 163197046787269792, 5719576163352685696, 212565832527352216928, 8350117027586731306848
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Maintained by
N. J. A. Sloane
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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.
AT&T Labs Research
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