Number of inequivalent ways to color a 3 X 3 checkerboard using at most n colors allowing rotations and reflections.
A217331
Number of inequivalent ways to color a 3 X 3 checkerboard using at most n colors allowing rotations and reflections.
Terms
- a(0) =0a(1) =1a(2) =102a(3) =2862a(4) =34960a(5) =252375a(6) =1284066a(7) =5105212a(8) =16912512a(9) =48700845a(10) =125512750a(11) =295649706a(12) =646497072a(13) =1328022787a(14) =2586463530a(15) =4811211000a(16) =8598455296a(17) =14835732057a(18) =24812155062a(19) =40359796390a(20) =64032402000
External references
- oeis: A217331