Number of ways of placing n nonattacking rooks on a toroidal board of 2n^2 equilateral triangular spaces.
A377700
Number of ways of placing n nonattacking rooks on a toroidal board of 2n^2 equilateral triangular spaces.
Terms
- a(0) =2a(1) =4a(2) =6a(3) =48a(4) =30a(5) =1152a(6) =266a(7) =45824a(8) =4050a(9) =2736000a(10) =75702a(11) =233017344a(12) =2060734
External references
- oeis: A377700