OFFSET
1,2
COMMENTS
A permutation of the positive integers. See the comment at A183079.
LINKS
FORMULA
EXAMPLE
Top 6 levels of the binary tree:
1
|
...................2...................
3 4
7......../ \........5 9......../ \........6
/ \ / \ / \ / \
/ \ / \ / \ / \
/ \ / \ / \ / \
21 11 13 8 31 14 15 10
87 29 37 17 49 19 25 12 141 42 51 20 63 22 33 16
...
From the level 3 to the level 4: 3 --> (7,5) and 4 --> (9,6).
PROG
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Clark Kimberling, Dec 24 2010
EXTENSIONS
Added a formula to the Name field and more terms, edited Example section - Antti Karttunen, May 09 2015
STATUS
approved