Number of arrays of length 3 that are sums of n consecutive elements of length 3+n-1 permutations of 0..3+n-2.
A229566
Number of arrays of length 3 that are sums of n consecutive elements of length 3+n-1 permutations of 0..3+n-2.
Terms
- a(0) =6a(1) =16a(2) =96a(3) =264a(4) =524a(5) =920a(6) =1484a(7) =2216a(8) =3148a(9) =4304a(10) =5708a(11) =7384
External references
- oeis: A229566