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A047660
Number of self-complementary 2-plexes.
2
1, 1, 0, 1, 2, 40, 0, 703760, 131328, 300241541128192, 0, 28170013344558609991874248704, 24595658799308603392, 9502080486519653717758562294813775233459455787008, 0
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OFFSET
1,5
LINKS
Table of n, a(n) for n=1..15.
E. M. Palmer,
On the number of n-plexes
, Discrete Math., 6 (1973), 377-390.
CROSSREFS
Cf.
A000171
,
A051251
.
Sequence in context:
A378871
A232086
A356683
*
A213909
A349717
A349726
Adjacent sequences:
A047657
A047658
A047659
*
A047661
A047662
A047663
KEYWORD
nonn
,
nice
AUTHOR
N. J. A. Sloane
EXTENSIONS
More terms from
Vladeta Jovovic
STATUS
approved