OFFSET
0,2
COMMENTS
Permutation of natural numbers obtained from the Ludic sieve. Note the indexing: Domain starts from 0, range from 1.
This sequence can be represented as a binary tree. Each left hand child is obtained by applying A269379 to the parent's contents, and each right hand child is obtained by doubling the parent's contents:
1
|
...................2...................
3 4
5......../ \........6 9......../ \........8
/ \ / \ / \ / \
/ \ / \ / \ / \
/ \ / \ / \ / \
7 10 15 12 19 18 21 16
11 14 27 20 35 30 33 24 31 38 51 36 49 42 45 32
etc.
Sequence A269385 is obtained from the mirror image of the same tree.
LINKS
FORMULA
PROG
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Antti Karttunen, Mar 01 2016
STATUS
approved