Number of n X 3 integer arrays with each element equal to the number of horizontal, diagonal and antidiagonal neighbors exactly one smaller than itself.
A266126
Number of n X 3 integer arrays with each element equal to the number of horizontal, diagonal and antidiagonal neighbors exactly one smaller than itself.
Terms
- a(0) =4a(1) =25a(2) =77a(3) =385a(4) =2099a(5) =9083a(6) =48188a(7) =249446a(8) =1166325a(9) =6288299a(10) =31791039a(11) =153857132a(12) =834409385a(13) =4178055126a(14) =20594948568a(15) =111887135749a(16) =558869714981
External references
- oeis: A266126