Number of (n+2)X(5+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.
A253421
Number of (n+2)X(5+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) =1581a(1) =10411a(2) =215037a(3) =1432500a(4) =9787192a(5) =31393746a(6) =187516434a(7) =402193875a(8) =1885771797a(9) =2402676252a(10) =10791372467a(11) =13668072759a(12) =29495644141a(13) =31712757323a(14) =83214252197a(15) =92712352801a(16) =154900321588a(17) =160193732925a(18) =330016199502
External references
- oeis: A253421