OFFSET
0,4
LINKS
N. Heninger, E. M. Rains and N. J. A. Sloane, On the Integrality of n-th Roots of Generating Functions, J. Combinatorial Theory, Series A, 113 (2006), 1732-1745.
M. Terada, J. Asatani and T. Koumoto, Weight Distribution
EXAMPLE
x^32 + 496*x^20*y^12 + 1054*x^16*y^16 + 496*x^12*y^20 + y^32.
PROG
(Magma) C := BCHCode(GF(2), 31, 9); D:=ExtendCode(C); W<x, y>:=WeightEnumerator(D);
CROSSREFS
KEYWORD
nonn,fini,full
AUTHOR
N. J. A. Sloane and Nadia Heninger, Aug 29 2005
STATUS
approved