Number of n X 2 integer arrays with each element equal to the number of horizontal and antidiagonal neighbors less than itself.
A266027
Number of n X 2 integer arrays with each element equal to the number of horizontal and antidiagonal neighbors less than itself.
Terms
- a(0) =3a(1) =11a(2) =55a(3) =263a(4) =1248a(5) =5959a(6) =28399a(7) =135383a(8) =645407a(9) =3076736a(10) =14667339a(11) =69921635a(12) =333328023a(13) =1589030151a(14) =7575170720a(15) =36112097743a(16) =172152371303a(17) =820678962999
External references
- oeis: A266027