login
A209863
a(n) = Number of fixed points of permutation A209861/A209862 in range [2^(n-1),(2^n)-1].
9
1, 1, 2, 4, 6, 6, 6, 8, 8, 8, 12, 8, 10, 8, 10, 6, 6, 10, 8, 6, 6, 10, 8, 8, 6
OFFSET
0,3
COMMENTS
See the conjecture given in A209860. If true, then all the terms from a(2) onward are even. a(0) gives the number of fixed points in range [0,0], i.e. 1.
LINKS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Mar 24 2012
STATUS
approved