Triangle read by rows: T(n,m) is the number of pattern classes in the (n,m)-rectangular grid with 5 colors and n>=m, two patterns are in the same class if one of them can be obtained by a reflection or 180-degree rotation of the other.
A283434
Triangle read by rows: T(n,m) is the number of pattern classes in the (n,m)-rectangular grid with 5 colors and n>=m, two patterns are in the same class if one of them can be obtained by a reflection or 180-degree rotation of the other.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =1a(4) =15a(5) =175a(6) =1a(7) =75a(8) =4125a(9) =496875a(10) =1a(11) =325a(12) =98125a(13) =61140625a(14) =38147265625a(15) =1a(16) =1625a(17) =2446875a(18) =7632421875a(21) =1a(22) =7875a(23) =61046875a(24) =953736328125
External references
- oeis: A283434