login
This site is supported by donations to The OEIS Foundation.

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
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 * A298178 A147618 A290764

Adjacent sequences:  A212866 A212867 A212868 * A212870 A212871 A212872

KEYWORD

nonn

AUTHOR

R. H. Hardin May 29 2012

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 10 20:23 EST 2019. Contains 329909 sequences. (Running on oeis4.)