T(n,k)=Number of nXk 0..3 arrays with every element value z a city block distance of exactly z from another element value z.
A209178
T(n,k)=Number of nXk 0..3 arrays with every element value z a city block distance of exactly z from another element value z.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =5a(4) =13a(5) =5a(6) =12a(7) =115a(8) =115a(9) =12a(10) =28a(11) =1243a(12) =5053a(13) =1243a(14) =28a(15) =65a(16) =11598a(17) =236727a(18) =236727a(19) =11598a(20) =65a(21) =158a(22) =110995a(23) =9263488a(24) =43361446a(25) =9263488a(26) =110995a(27) =158a(28) =382a(29) =1053489
External references
- oeis: A209178