Number of signed trees with n nodes.
1, 2, 3, 10, 27, 98, 350, 1402, 5743, 24742, 108968, 492638, 2266502, 10600510
2 seqfan posts
Tue Oct 18 02:39:55 CEST 2011 [seqfan] Re: SIAM Rev problem 89-19
Fri Oct 29 05:35:16 CEST 2010 [seqfan] Implementing first 500 sequences in Java
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
Links to OEIS content are included according to
The OEIS End-User License Agreement
.