61826domain: NAppears in sequences24*a(n) counts the solid partitions of n that have no symmetry under any single or combined operations built from mirroring (F), rotation (T) or 4-D rotation (L).at n=18A097507a(n) = Sum_{k=4..n} ( binomial(n,k)*(k-2)*(2^k-2*k-2) ) - (2^n-n-1).at n=5A328088