Number of inequivalent 3 X 3 matrices with entries in {1,2,3,..,n} up to vertical and horizontal reflections.
A282614
Number of inequivalent 3 X 3 matrices with entries in {1,2,3,..,n} up to vertical and horizontal reflections.
Terms
- a(0) =0a(1) =1a(2) =168a(3) =5346a(4) =67840a(5) =496875a(6) =2544696a(7) =10151428a(8) =33693696a(9) =97135605a(10) =250525000a(11) =590412966a(12) =1291500288a(13) =2653631071a(14) =5169160920a(15) =9616725000a(16) =17188519936a(17) =29659392873a(18) =49607301096a(19) =80696066410a(20) =128032800000a(21) =198613915731a(22) =301875282808a(23) =450363792396
External references
- oeis: A282614