OFFSET
1,1
LINKS
Fomin, Sergey; Zelevinsky, Andrei; The Laurent phenomenon, arXiv:math/0104241v1 [math.CO] (2001), Advances in Applied Mathematics 28 (2002), 119-144.
EXAMPLE
For n=1 there are a(1)=2 graphs with perfect state transfer: C_4 and the disjoint union of two copies of K_2.
CROSSREFS
KEYWORD
nonn
AUTHOR
Matthew C. Russell, Apr 25 2012
STATUS
approved