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Number of nondecreasing sequences of 6 1..n integers with no element dividing the sequence sum
2

%I #4 May 29 2012 04:20:55

%S 0,0,2,9,32,82,199,407,796,1424,2407,3948,6166,9456,14171,20556,29007,

%T 40714,55528,75323,100720,132454,171336,221156,281727,355410,445061,

%U 553660,680365,835511,1013730,1226556,1475591,1764220,2101833,2493659

%N Number of nondecreasing sequences of 6 1..n integers with no element dividing the sequence sum

%C Row 6 of A212868

%H R. H. Hardin, <a href="/A212873/b212873.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=8

%e ..3....4....4....2....2....4....3....2....2....4....4....3....2....2....3....5

%e ..3....4....6....2....2....6....3....3....4....4....4....4....2....3....4....5

%e ..4....6....6....2....4....7....6....5....5....4....4....4....5....4....5....5

%e ..4....7....6....3....5....8....6....5....6....4....4....6....6....6....5....5

%e ..4....8....6....8....6....8....8....8....7....4....5....6....6....7....6....6

%e ..5....8....6....8....8....8....8....8....7....6....8....6....8....7....6....7

%K nonn

%O 1,3

%A _R. H. Hardin_ May 29 2012