Number of ways to put n red, n blue, and n green balls into n indistinguishable boxes.
A254811
Number of ways to put n red, n blue, and n green balls into n indistinguishable boxes.
Terms
- a(0) =1a(1) =1a(2) =14a(3) =171a(4) =1975a(5) =20096a(6) =187921a(7) =1609727a(8) =12827392a(9) =95701382a(10) =673873648a(11) =4503935052a(12) =28728268655a(13) =175644353402
External references
- oeis: A254811