Number of inequivalent 3 X 3 matrices with entries in {1,2,3,..,n} up to rotations.

A282613

Number of inequivalent 3 X 3 matrices with entries in {1,2,3,..,n} up to rotations.

Terms

    a(0) =0a(1) =1a(2) =140a(3) =4995a(4) =65824a(5) =489125a(6) =2521476a(7) =10092775a(8) =33562880a(9) =96870249a(10) =250025500a(11) =589527851a(12) =1290008160a(13) =2651218765a(14) =5165397524a(15) =9611031375a(16) =17180133376a(17) =29647326545a(18) =49590297900a(19) =80672546899a(20) =128000804000a(21) =198571037301a(22) =301818598180a(23) =450289780535

External references