A002888 a(n) is the cutting number of the tree corresponding to A002887(n).

1, 2, 9, 20, 670

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• more

References

• Frank Harary and Phillip A. Ostrand, How cutting is a cut point?, pp. 147-150 of R. K. Guy et al., editors, Combinatorial Structures and Their Applications (Proceedings Calgary Conference Jun 1969), Gordon and Breach, NY, 1970.
• 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

• Frank Harary and Phillip A. Ostrand, The cutting center theorem for trees, Discrete Mathematics, 1 (1971), 7-18.

Crossrefs

Cf. A002887, A331237.

Extensions

Title improved by Sean A. Irvine, Jan 16 2020