A370967 a(n) = number of max-closed n X n X n relations.

1, 2, 122, 468732, 114446643198

Offset: 0

Author

N. J. A. Sloane, Apr 04 2024

Keywords

• nonn
• more

Links

• Don Knuth, Parades and poly-Bernoulli bijections, Mar 31 2024. See (19.14) and (19.16).

Crossrefs

Cf. A370966.

Extensions

a(0)=1 prepended by Filip Stappers, Aug 20 2024