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A118987 Number of different values taken by the determinant of a symmetric real (+1,-1)-matrix of order n. 2
1, 2, 2, 3, 5, 7, 11, 19 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
CROSSREFS
Sequence in context: A196375 A300440 A147997 * A218557 A060699 A284909
KEYWORD
nonn,more
AUTHOR
Giovanni Resta, May 08 2006
EXTENSIONS
a(0)=1 prepended by Alois P. Heinz, Mar 16 2019
STATUS
approved

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Last modified May 20 02:11 EDT 2024. Contains 372703 sequences. (Running on oeis4.)