T(n,k) = Number of n X k 1..4 arrays with every element value z a city block distance of exactly z from another element value z.

A209394

T(n,k) = Number of n X k 1..4 arrays with every element value z a city block distance of exactly z from another element value z.

Terms

    a(0) =0a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =3a(7) =16a(8) =16a(9) =3a(10) =3a(11) =152a(12) =488a(13) =152a(14) =3a(15) =13a(16) =1449a(17) =22416a(18) =22416a(19) =1449a(20) =13a(21) =16a(22) =11655a(23) =978956a(24) =4488765a(25) =978956a(26) =11655a(27) =16a(28) =42a(29) =89469

External references