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A000307
Number of 4-level labeled rooted trees with n leaves.
(Formerly M3590 N1455)
+0
16
1, 1, 4, 22, 154, 1304, 12915, 146115, 1855570, 26097835, 402215465, 6734414075, 121629173423, 2355470737637, 48664218965021, 1067895971109199, 24795678053493443, 607144847919796830, 15630954703539323090
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 5 08:23 EST 2009. Contains 170348 sequences.
AT&T Labs Research
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