Number of 4X4X4 triangular 0..n arrays with some element plus some adjacent element totalling n+1 exactly once.
A270512
Number of 4X4X4 triangular 0..n arrays with some element plus some adjacent element totalling n+1 exactly once.
Terms
- a(0) =126a(1) =5406a(2) =132474a(3) =1522068a(4) =12034134a(5) =65046258a(6) =286690914a(7) =1009836744a(8) =3156450798a(9) =8543466150a(10) =21426975306a(11) =48675627036a(12) =104954386374a(13) =210632574138a(14) =407075899314a(15) =745193641488
External references
- oeis: A270512