T(n,k)=Number of nXk array permutations with each element moving zero or one space horizontally or diagonally.
A189449
T(n,k)=Number of nXk array permutations with each element moving zero or one space horizontally or diagonally.
Terms
- a(0) =1a(1) =2a(2) =1a(3) =3a(4) =5a(5) =1a(6) =5a(7) =16a(8) =13a(9) =1a(10) =8a(11) =61a(12) =80a(13) =34a(14) =1a(15) =13a(16) =225a(17) =666a(18) =400a(19) =89a(20) =1a(21) =21a(22) =841a(23) =5080a(24) =7300a(25) =2000a(26) =233a(27) =1a(28) =34a(29) =3136
External references
- oeis: A189449