Triangle 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.

A338116

Triangle 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.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =3a(4) =0a(5) =1a(6) =26a(7) =306a(8) =1400a(9) =2800a(10) =2520a(11) =840a(12) =0a(13) =0a(14) =0a(15) =1a(16) =766a(17) =199902a(18) =10426768a(19) =200588850a(20) =1903776420a(21) =10360383600a(22) =35133957600a(23) =77643846000a(24) =113816253600a(25) =109880971200a(26) =67199932800a(27) =23610787200a(28) =3632428800a(29) =0

External references