OFFSET
2,1
COMMENTS
All such sequences have holonomic recurrences (cf. comment in A159359). - Georg Fischer, Feb 17 2022
LINKS
R. H. Hardin, Table of n, a(n) for n=2..100
Index entries for linear recurrences with constant coefficients, signature (15, -105, 455, -1365, 3003, -5005, 6435, -6435, 5005, -3003, 1365, -455, 105, -15, 1).
FORMULA
Empirical: a(n)=n^2*(n-1)*(n+1)*(n^2-2)*(n^2-3)*(n^6-15*n^4+74*n^2+720)/5040. [From R. J. Mathar, Aug 11 2009]
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 11 2009
STATUS
approved