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Number of compositions of n into distinct parts with exactly nine descents.
2

%I #4 Apr 28 2014 09:42:50

%S 1,1,2,3,5,7,11,15,22,30,42,2091,2111,4169,6236,10344,14464,22663,

%T 30880,45215,61610,86165,114823,633991,681039,1224713,1780658,2839351,

%U 3916439,5986776,8083675,11666364,15768163,21850338,28948248,39487845,96599064,113083909

%N Number of compositions of n into distinct parts with exactly nine descents.

%H Alois P. Heinz, <a href="/A241728/b241728.txt">Table of n, a(n) for n = 55..1000</a>

%Y Column k=9 of A241719.

%K nonn

%O 55,3

%A _Alois P. Heinz_, Apr 27 2014