Number of 4 X 4 X 4 triangular nonnegative integer arrays with all sums of an element and its neighbors <= n.
A166190
Number of 4 X 4 X 4 triangular nonnegative integer arrays with all sums of an element and its neighbors <= n.
Terms
- a(0) =1a(1) =21a(2) =207a(3) =1298a(4) =6052a(5) =22824a(6) =73383a(7) =208269a(8) =534687a(9) =1264026a(10) =2788834a(11) =5802288a(12) =11477240a(13) =21726484a(14) =39571482a(15) =69652946a(16) =118924069a(17) =197575191a(18) =320248137a(19) =507608530a(20) =788356140a(21) =1201765708a(22) =1800865001a(23) =2656371783a(24) =3861528515
External references
- oeis: A166190