Number of nX2 integer arrays with each element equal to the number of horizontal, vertical, diagonal and antidiagonal neighbors exactly one smaller than itself.
A266062
Number of nX2 integer arrays with each element equal to the number of horizontal, vertical, diagonal and antidiagonal neighbors exactly one smaller than itself.
Terms
- a(0) =3a(1) =17a(2) =35a(3) =89a(4) =323a(5) =1057a(6) =3027a(7) =9257a(8) =29835a(9) =92561a(10) =288027a(11) =898873a(12) =2818275a(13) =8824849a(14) =27652507a(15) =86466761a(16) =270984643a(17) =849833089a(18) =2661782123a(19) =8337922937a(20) =26141124755a(21) =81934791281a(22) =256731280891a(23) =804699050537
External references
- oeis: A266062