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| NAME
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allocatedDeterminants of symmetric real {0,1}-matrices of order 9 that only occur foras Hugopositive Pfoertnervalues.
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| DATA
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89, 94, 95, 97, 98, 99, 101, 102, 105, 110, 116, 125, 144
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| OFFSET
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1,1
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| COMMENTS
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The non-occurrence of the corresponding negative determinants causes the difference A089472(9) - A118985(9) = 227 - 214 = 13.
A similar situation already occurs for 7 X 7 matrices, where the 3 determinant values -20, -24, -32 only occur with negative signs.
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| LINKS
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Hugo Pfoertner, <a href="/A373915/a373915.txt">Examples of 9 X 9 matrices with determinants = a(n)</a>.
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| CROSSREFS
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Cf. A003432, A089472, A108150, A118985.
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| KEYWORD
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allocated
nonn,fini,full
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| AUTHOR
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Hugo Pfoertner, Jun 23 2024
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| STATUS
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approved
editing
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