OFFSET
1,2
COMMENTS
A self-inverse permutation of the natural numbers.
FORMULA
(See A114538 for definition of transposition sequence.)
EXAMPLE
Start with the northwest corner of A114881:
1 3 5 7 9
2 8 14 20 26
4 24 34 54 64
6 48 76 90 118
a(1)=1 because 1=T(1,1) and T(1,1)=1.
a(2)=3 because 2=T(2,1) and T(1,2)=3.
a(3)=2 because 3=T(1,2) and T(2,1)=2.
a(20)=48 because 20=T(2,4) and T(4,2)=48.
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Jan 03 2006
STATUS
approved