Number of 4X4X4 triangular 0..n arrays with some element plus some adjacent element totalling n+1, n or n-1 exactly once.
A270853
Number of 4X4X4 triangular 0..n arrays with some element plus some adjacent element totalling n+1, n or n-1 exactly once.
Terms
- a(0) =0a(1) =0a(2) =252a(3) =6822a(4) =108348a(5) =1144464a(6) =8559378a(7) =49511370a(8) =225803628a(9) =868915644a(10) =2866094766a(11) =8402366160a(12) =22207133946a(13) =53934812124a(14) =121777854570a(15) =258248878044a(16) =519141258054a(17) =994719606876
External references
- oeis: A270853