Number of (n+2)X(3+2) nonnegative integer arrays with all values the knight distance from the upper left minus as much as 1, with successive minimum path knight move differences either 0 or +1, and any unreachable value zero.
A253419
Number of (n+2)X(3+2) nonnegative integer arrays with all values the knight distance from the upper left minus as much as 1, with successive minimum path knight move differences either 0 or +1, and any unreachable value zero.
Terms
- a(0) =257a(1) =1087a(2) =9985a(3) =44729a(4) =215037a(5) =321383a(6) =1399041a(7) =2045480a(8) =4026041a(9) =4462239a(10) =11268009a(11) =13305698a(12) =20522668a(13) =21502576a(14) =42733327a(15) =46956630a(16) =64753373a(17) =66493567a(18) =115073779a(19) =122276808a(20) =157921612a(21) =160638668a(22) =253728085a(23) =264704952a(24) =327391225
External references
- oeis: A253419