Number of chiral pairs of rows of n colors with exactly 6 different colors.

A305626

Number of chiral pairs of rows of n colors with exactly 6 different colors.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =360a(6) =7560a(7) =95760a(8) =952560a(9) =8217720a(10) =64614960a(11) =476514360a(12) =3355664760a(13) =22837086720a(14) =151449482520a(15) =984573465120

External references