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 A212533 Number of nondecreasing sequences of n 1..5 integers with every element dividing the sequence sum 1

%I

%S 5,5,8,12,21,21,33,40,57,70,90,101,132,153,208,262,343,401,491,546,

%T 625,667,737,770,851,889,989,1070,1226,1361,1592,1787,2070,2305,2616,

%U 2864,3198,3444,3781,4045,4399,4670,5070,5391,5860,6254,6786,7235,7843,8336

%N Number of nondecreasing sequences of n 1..5 integers with every element dividing the sequence sum

%C Column 5 of A212536

%H R. H. Hardin, <a href="/A212533/b212533.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = a(n-1) +a(n-2) -2*a(n-5) +a(n-8) +a(n-9) -a(n-10) +a(n-60) -a(n-61) -a(n-62) +2*a(n-65) -a(n-68) -a(n-69) +a(n-70)

%e Some solutions for n=8

%e ..1....1....5....1....1....1....1....2....1....1....1....1....1....1....2....1

%e ..1....1....5....2....1....2....2....2....1....1....1....3....1....1....3....1

%e ..1....2....5....2....2....2....3....3....1....2....1....3....1....3....3....1

%e ..1....4....5....3....2....5....3....3....3....2....1....3....1....5....3....1

%e ..4....4....5....4....2....5....3....5....3....2....1....5....2....5....3....2

%e ..4....4....5....4....2....5....4....5....3....4....1....5....2....5....3....2

%e ..4....4....5....4....2....5....4....5....3....4....1....5....4....5....3....2

%e ..4....4....5....4....4....5....4....5....3....4....1....5....4....5....4....2

%K nonn

%O 1,1

%A _R. H. Hardin_ May 20 2012

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Last modified January 28 00:29 EST 2022. Contains 350654 sequences. (Running on oeis4.)