Number of 3 X 3 X 3 triangular 0..n arrays with no element lying outside the (possibly reversed) range delimited by its sw and se neighbors, and no element equal to its horizontal neighbors.
A214385
Number of 3 X 3 X 3 triangular 0..n arrays with no element lying outside the (possibly reversed) range delimited by its sw and se neighbors, and no element equal to its horizontal neighbors.
Terms
- a(0) =8a(1) =94a(2) =456a(3) =1506a(4) =3976a(5) =9044a(6) =18480a(7) =34812a(8) =61512a(9) =103202a(10) =165880a(11) =257166a(12) =386568a(13) =565768a(14) =808928a(15) =1133016a(16) =1558152a(17) =2107974a(18) =2810024a(19) =3696154a(20) =4802952a(21) =6172188a(22) =7851280a(23) =9893780a(24) =12359880a(25) =15316938a(26) =18840024a(27) =23012486a(28) =27926536a(29) =33683856
External references
- oeis: A214385