OFFSET
1,2
COMMENTS
This sequence can be represented as a binary tree. Each left hand child is produced as A005117(1+n), and each right hand child as A065642(1+n), when the parent node contains n:
1
................../ \..................
2 4
3......../ \........9 6......../ \........25
/ \ / \ / \ / \
/ \ / \ / \ / \
/ \ / \ / \ / \
5 8 14 20 10 49 39 52
7 12 13 27 22 45 33 63 15 121 79 80 65 50 85 2809
etc.
Compare to A285112.
LINKS
PROG
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Antti Karttunen, Apr 17 2017
STATUS
approved