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A212869 Number of nondecreasing sequences of n 1..n+1 integers with no element dividing the sequence sum 1

%I #3 May 29 2012 04:17:12

%S 0,1,3,15,52,199,722,2693,10052,37344,141943,528323,2020746,7720299,

%T 29535575,112041465,434810382,1666519344,6447232492,24895996003,

%U 96654652273

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

%C Superdiagonal 1 of A212868

%e All solutions for n=4

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

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

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

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

%K nonn

%O 1,3

%A _R. H. Hardin_ May 29 2012

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Last modified April 19 04:35 EDT 2024. Contains 371782 sequences. (Running on oeis4.)