Number of nX3 integer arrays with each element equal to the number of horizontal, vertical, diagonal and antidiagonal neighbors exactly one smaller than itself.
A266063
Number of nX3 integer arrays with each element equal to the number of horizontal, vertical, diagonal and antidiagonal neighbors exactly one smaller than itself.
Terms
- a(0) =4a(1) =35a(2) =34a(3) =81a(4) =809a(5) =1750a(6) =5071a(7) =29256a(8) =93170a(9) =300067a(10) =1374813a(11) =4881352a(12) =17156265a(13) =70554601a(14) =260365422a(15) =950843894a(16) =3740973714a(17) =13990748422a(18) =52014399980a(19) =200564580212a(20) =754390821186
External references
- oeis: A266063