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Number of collections of nonempty multisets with a total of n+4 objects of exactly n colors.
2

%I #4 Mar 11 2015 19:38:13

%S 0,7,127,1518,15800,154410,1470702,13921922,132465058,1275540777,

%T 12482994680,124488408308,1267192059423,13179257452283,

%U 140124528853582,1523425278785190,16936782395913056,192530701636263004,2237390160167413881,26572938927762778750

%N Number of collections of nonempty multisets with a total of n+4 objects of exactly n colors.

%H Alois P. Heinz, <a href="/A255954/b255954.txt">Table of n, a(n) for n = 0..250</a>

%F a(n) = A255903(n+4,n),

%Y A diagonal of A255903.

%K nonn

%O 0,2

%A _Alois P. Heinz_, Mar 11 2015