T(n,k) = Number of n X k 1..3 arrays with no element with value z exactly a city block distance of z from another element with value z.
A209374
T(n,k) = Number of n X k 1..3 arrays with no element with value z exactly a city block distance of z from another element with value z.
Terms
- a(0) =3a(1) =8a(2) =8a(3) =19a(4) =39a(5) =19a(6) =35a(7) =84a(8) =84a(9) =35a(10) =64a(11) =129a(12) =115a(13) =129a(14) =64a(15) =110a(16) =178a(17) =242a(18) =242a(19) =178a(20) =110a(21) =185a(22) =338a(23) =690a(24) =968a(25) =690a(26) =338a(27) =185a(28) =322a(29) =722
External references
- oeis: A209374