Number of (n+2)X(1+2) nonnegative integer arrays with all values the knight distance from the upper left minus as much as 2, with successive minimum path knight move differences either 0 or +1, and any unreachable value zero.
A253112
Number of (n+2)X(1+2) nonnegative integer arrays with all values the knight distance from the upper left minus as much as 2, with successive minimum path knight move differences either 0 or +1, and any unreachable value zero.
Terms
- a(0) =53a(1) =272a(2) =1342a(3) =4619a(4) =14541a(5) =34786a(6) =113891a(7) =233392a(8) =525617a(9) =853971a(10) =2327441a(11) =3609337a(12) =6243433a(13) =8189113a(14) =18881723a(15) =25291483a(16) =37714007a(17) =44777219a(18) =90840301a(19) =112309445a(20) =153843349a(21) =173399285a(22) =320621751a(23) =377531207a(24) =490093227a(25) =535756183
External references
- oeis: A253112