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A212869 Number of nondecreasing sequences of n 1..n+1 integers with no element dividing the sequence sum 1
0, 1, 3, 15, 52, 199, 722, 2693, 10052, 37344, 141943, 528323, 2020746, 7720299, 29535575, 112041465, 434810382, 1666519344, 6447232492, 24895996003, 96654652273 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Superdiagonal 1 of A212868

LINKS

Table of n, a(n) for n=1..21.

EXAMPLE

All solutions for n=4

..2....4....3....3....3....2....2....3....3....2....2....4....4....2....2

..2....5....3....3....3....2....2....4....3....5....3....4....4....3....3

..4....5....4....3....5....3....2....5....3....5....4....5....4....3....3

..5....5....4....5....5....4....5....5....4....5....4....5....5....5....3

CROSSREFS

Sequence in context: A192742 A166035 A038192 * A332375 A298178 A147618

Adjacent sequences:  A212866 A212867 A212868 * A212870 A212871 A212872

KEYWORD

nonn

AUTHOR

R. H. Hardin May 29 2012

STATUS

approved

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Last modified February 18 04:48 EST 2020. Contains 332011 sequences. (Running on oeis4.)