A002792 Erroneous version of A108919.
1, 0, 1, 1, 13, 51, 601, 4806, 39173, 775351
Offset: 0
Keywords
References
- John Riordan, personal communication.
- N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
- N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
Links
- David Callan, A sign-reversing involution to count labeled lone-child-avoiding trees, arXiv:1406.7784 [math.CO], (30-June-2014)
Comments