Number of n-colorings of the cubical graph.

Terms

a(0) =0a(1) =0a(2) =2a(3) =114a(4) =2652a(5) =29660a(6) =198030a(7) =932862a(8) =3440024a(9) =10599192a(10) =28478970a(11) =68716010a(12) =152040372a(13) =313269684a(14) =608134982a(15) =1122341430a(16) =1983307440a(17) =3375066032a(18) =5556852594a(19) =8885943522a(20) =13845350540a(21) =21077015820a(22) =31421193342a(23) =45962742254a(24) =66085098312a(25) =93532729800