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A119009
Number of n X n real symmetric (0,1)-matrices with permanent = 1.
1
1, 4, 22, 286, 5126, 190096, 9477868
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..7.
CROSSREFS
Cf.
A089482
,
A119008
.
Sequence in context:
A195227
A265908
A359111
*
A326883
A317803
A053722
Adjacent sequences:
A119006
A119007
A119008
*
A119010
A119011
A119012
KEYWORD
nonn
,
more
AUTHOR
Giovanni Resta
, May 08 2006
STATUS
approved
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Last modified April 24 13:58 EDT 2024. Contains 371960 sequences. (Running on oeis4.)