Number of (n+2)X(2+2) nonnegative integer arrays with all values the knight distance from the upper left minus as much as 3, with successive minimum path knight move differences either 0 or +1, and any unreachable value zero.
A253336
Number of (n+2)X(2+2) nonnegative integer arrays with all values the knight distance from the upper left minus as much as 3, with successive minimum path knight move differences either 0 or +1, and any unreachable value zero.
Terms
- a(0) =488a(1) =2028a(2) =11581a(3) =59519a(4) =306822a(5) =1472184a(6) =7426426a(7) =30066852a(8) =142944394a(9) =470066369a(10) =2057470881a(11) =5310820947a(12) =20643033198a(13) =42416116870a(14) =143775300377a(15) =248844171284a(16) =741261828329
External references
- oeis: A253336