A109141 G.f.: fourth root of Hamming weight enumerator of [12,6,6]_3 ternary extended Golay code (cf. A105683).

1, 0, 66, 110, -6528, -21780, 986898, 5029200, -173972160, -1211972300, 33051614904, 297628438800, -6538730283946, -73793338948560, 1321581552446628, 18387553507364580, -269415270699505128, -4592418987961074600, 54819166320379762180, 1147693439998612940400

Offset

0,3

Links

Table of n, a(n) for n=0..19.

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.

Example

1+66*x^2+110*x^3-6528*x^4-21780*x^5+986898*x^6+5029200*x^7-...

Crossrefs

Sequence in context: A109759 A194196 A281937 * A350197 A350204 A031184

Adjacent sequences: A109138 A109139 A109140 * A109142 A109143 A109144

Keyword

sign

Author

N. J. A. Sloane and Nadia Heninger, Aug 18 2005

Status

approved