Number of 3 X 3 X 3 triangular 0..n arrays with every horizontal row nondecreasing and having the same average value.
A214907
Number of 3 X 3 X 3 triangular 0..n arrays with every horizontal row nondecreasing and having the same average value.
Terms
- a(0) =2a(1) =6a(2) =14a(3) =29a(4) =50a(5) =88a(6) =136a(7) =209a(8) =302a(9) =430a(10) =584a(11) =793a(12) =1034a(13) =1344a(14) =1704a(15) =2149a(16) =2652a(17) =3270a(18) =3956a(19) =4777a(20) =5690a(21) =6760a(22) =7934a(23) =9305a(24) =10792a(25) =12502a(26) =14360a(27) =16469a(28) =18740a(29) =21312
External references
- oeis: A214907