T(n,k)=Number of nXk arrays of permutations of 0..n*k-1 with each element moved a city block distance of 0 or 3.
A263442
T(n,k)=Number of nXk arrays of permutations of 0..n*k-1 with each element moved a city block distance of 0 or 3.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =2a(7) =4a(8) =4a(9) =2a(10) =4a(11) =25a(12) =49a(13) =25a(14) =4a(15) =8a(16) =125a(17) =1770a(18) =1770a(19) =125a(20) =8a(21) =12a(22) =633a(23) =52352a(24) =560436a(25) =52352a(26) =633a(27) =12a(28) =18a(29) =2532
External references
- oeis: A263442