A004252 Path sums of n-point graphs.
1, 2, 4, 9, 26, 95
Offset: 1
References
- A. K. Dewdney, Three classes of graph invariants and their powers, pp. 243-263 of Proc. 9th S-E Conf. Combinatorics, Graph Theory, Computing, Congr. Numer. 21 (1978).
- N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).