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A263627
Number of Seidel matrices of order n with minimal eigenvalue -5.
0
0, 0, 0, 0, 0, 1, 2, 8, 33, 306, 6727, 219754
OFFSET
1,7
LINKS
G. Greaves, J. H. Koolen, A. Munemasa, F. Szöllősi, Equiangular lines in Euclidean spaces, arXiv:1403.2155 [math.CO], 2014.
CROSSREFS
Sequence in context: A269890 A005040 A191551 * A172448 A268601 A026577
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Oct 24 2015
STATUS
approved