23610787200domain: NAppears in sequencesTriangle read by rows: T(n,k) is the number of achiral colorings of the faces (and peaks) of a regular n-dimensional simplex using exactly k colors. Row n has C(n+1,3) columns.at n=27A338116Denominators of coefficients in the expansion given in A340825 (see Comments at A340844).at n=12A340845