218688

Appears in sequences

• Coordination sequence for 4-dimensional face-centered cubic orthogonal lattice.at n=32A008529
• Number of endofunctions on [n] where all nonempty preimages have the same cardinality.at n=8A231812
• Number T(n,k) of endofunctions on [n] such that at most k elements with nonempty preimage have equal preimage cardinality and non-equinumerous preimages have cardinalities that differ by at least k; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=44A231915