A047660 Number of self-complementary 2-plexes.

1, 1, 0, 1, 2, 40, 0, 703760, 131328, 300241541128192, 0, 28170013344558609991874248704, 24595658799308603392, 9502080486519653717758562294813775233459455787008, 0

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: A339774 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