Triangle read by rows: T(n,m) is the number of pattern classes in the (n,m)-rectangular grid with 7 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.
A286895
Triangle read by rows: T(n,m) is the number of pattern classes in the (n,m)-rectangular grid with 7 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) =7a(3) =1a(4) =28a(5) =637a(6) =1a(7) =196a(8) =30184a(9) =10151428a(10) =1a(11) =1225a(12) =1443001a(13) =3461821825a(15) =1a(16) =8575a(17) =70656628a(21) =1a(22) =58996a(23) =3460410037
External references
- oeis: A286895