OFFSET
2,1
COMMENTS
The expansion is combinatorially explosive. The original output and further details are available from my website (see Links).
REFERENCES
T. Scharf, J.-Y. Thibon and B. G. Wybourne, Powers of the Vandermonde determinant ... J.Phys.A:Mat.Gen. (27) 4211 (1994)
LINKS
FORMULA
I conjecture that a(n) = prod_{x=0..floor(n/2)} (-3x+1) * prod_{x=0..floor((n-1)/2)} (6x+1).
EXAMPLE
a(3) = -14 because V^2(x1,x2,x3) = {42} - 3{411} - 3{33} + 6{321} - 15{222}.
PROG
The expansions were evaluated using the program SCHUR.
CROSSREFS
KEYWORD
hard,sign
AUTHOR
Brian G Wybourne (bgw(AT)phys.uni.torun.pl), Jul 29 2002
STATUS
approved