OEIS WebCam

The OEIS WebCam: Best Sequences

A058222

Tree of tournament sequences read across rows.

1, 2, 3, 4, 4, 5, 6, 5, 6, 7, 8, 5, 6, 7, 8, 6, 7, 8, 9, 10, 7, 8, 9, 10, 11, 12, 6, 7, 8, 9, 10, 7, 8, 9, 10, 11, 12, 8, 9, 10, 11, 12, 13, 14, 9, 10, 11, 12, 13, 14, 15, 16, 6, 7, 8, 9, 10, 7, 8, 9, 10, 11, 12, 8, 9, 10, 11, 12, 13, 14, 9, 10, 11, 12, 13, 14, 15, 16, 7, 8, 9

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

LINKS

Sean A. Irvine, Table of n, a(n) for n = 0..10000

M. Cook and M. Kleber, Tournament sequences and Meeussen sequences, Electronic J. Comb. 7 (2000), #R44.

FORMULA

Top node is 1; each node k has children labeled k+1, k+2, ..., 2k at next level.

EXAMPLE

Irregular triangle begins:

3,4;

4,5,6,5,6,7,8;