A071967 Theta series of 9-dimensional odd unimodular lattice E_8 + Z.

1, 2, 240, 480, 2162, 4320, 7200, 13440, 21840, 35042, 43680, 60960, 95520, 125280, 143040, 178560, 261362, 315840, 347280, 423840, 557280, 665280, 696480, 804480, 1069920, 1261922, 1227360, 1418880, 1845120, 2034720, 2066880, 2346240, 2890320

Offset

0,2

References

M. Peters, Sums of nine squares, Acta Arith., 102 (2002), 131-135.

Links

Table of n, a(n) for n=0..32.

Crossrefs

Cf. A004009.

Sequence in context: A225784 A087226 A217972 * A024348 A006523 A294319

Adjacent sequences: A071964 A071965 A071966 * A071968 A071969 A071970

Keyword

nonn

Author

N. J. A. Sloane, Jun 17 2002

Status

approved