Number of mixed Husimi trees with n nodes; or labeled polygonal cacti with bridges.
1, 1, 1, 4, 31, 362, 5676, 111982, 2666392, 74433564, 2384579440, 86248530296
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Fri Oct 29 05:35:16 CEST 2010 [seqfan] Implementing first 500 sequences in Java