Number of (n+2)X(2+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.
A253418
Number of (n+2)X(2+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) =56a(1) =131a(2) =1087a(3) =2827a(4) =10411a(5) =15803a(6) =41139a(7) =52297a(8) =111085a(9) =130089a(10) =241833a(11) =270699a(12) =459463a(13) =500207a(14) =794663a(15) =849301a(16) =1282729a(17) =1353277a(18) =1963565a(19) =2052039a(20) =2881683a(21) =2990099a(22) =4086203a(23) =4216577a(24) =5630853a(25) =5785201a(26) =7573969a(27) =7754307a(28) =9978495
External references
- oeis: A253418