Number of (n+1) X (1+1) 0..4 arrays with each row and column divisible by 9, read as a base-5 number with top and left being the most significant digits.
A263375
Number of (n+1) X (1+1) 0..4 arrays with each row and column divisible by 9, read as a base-5 number with top and left being the most significant digits.
Terms
- a(0) =2a(1) =4a(2) =11a(3) =31a(4) =89a(5) =253a(6) =748a(7) =2214a(8) =6615a(9) =19767a(10) =59217a(11) =177393a(12) =531930a(13) =1595052a(14) =4784427a(15) =14351103a(16) =43051113a(17) =129146733a(18) =387433620a(19) =1162281150a(20) =3486823767a(21) =10460412279a(22) =31381177761a(23) =94143356001a(24) =282429890802a(25) =847289140884
External references
- oeis: A263375