OFFSET
0,2
COMMENTS
LINKS
Daniele Marchei, Emanuela Merelli, and Andrew Francis, Factorizing the Brauer monoid in polynomial time, arXiv:2402.07874 [math.RA], 2024. See p. 24.
FORMULA
E.g.f.: 1/(1-x^2+x^4/4) (with interpolated zeros);
a(n)-(n+1)*(2*n-1)*a(n-1)=0. - R. J. Mathar, Nov 05 2012
MATHEMATICA
Table[(n+1) (2n)!/2^n, {n, 0, 20}] (* Harvey P. Dale, Jun 02 2020 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Paul Barry, Sep 04 2007
STATUS
approved