Number of (n+2)X(1+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.
A253417
Number of (n+2)X(1+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) =17a(1) =56a(2) =257a(3) =642a(4) =1581a(5) =2389a(6) =5716a(7) =7691a(8) =11429a(9) =13229a(10) =25870a(11) =30605a(12) =39701a(13) =42941a(14) =73200a(15) =81815a(16) =99709a(17) =104837a(18) =163706a(19) =177321a(20) =208349a(21) =215813a(22) =316972a(23) =336707a(24) =386101a(25) =396349a(26) =556166a(27) =583141a(28) =657029a(29) =670509
External references
- oeis: A253417