Number of 4X4X4 triangular 0..n arrays with some element plus some adjacent element totalling n exactly once.
A270259
Number of 4X4X4 triangular 0..n arrays with some element plus some adjacent element totalling n exactly once.
Terms
- a(0) =0a(1) =468a(2) =37848a(3) =772056a(4) =7876728a(5) =51535116a(6) =241185744a(7) =924548976a(8) =2925247440a(9) =8286296580a(10) =20750653800a(11) =48470046408a(12) =103934097288a(13) =212501629116a(14) =408044064288a(15) =756921118176
External references
- oeis: A270259