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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A317533 Regular triangle where T(n,k) is the number of non-isomorphic multiset partitions of size n and length k. 31
1, 2, 2, 3, 4, 3, 5, 14, 9, 5, 7, 28, 33, 16, 7, 11, 69, 104, 74, 29, 11, 15, 134, 294, 263, 142, 47, 15 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..28.

EXAMPLE

Non-isomorphic representatives of the T(3,2) = 4 multiset partitions:

  {{1},{1,1}}

  {{1},{1,2}}

  {{1},{2,2}}

  {{1},{2,3}}

Triangle begins:

    1

    2    2

    3    4    3

    5   14    9    5

    7   28   33   16    7

   11   69  104   74   29   11

   15  134  294  263  142   47   15

CROSSREFS

Row sums are A007716. First and last columns are both A000041.

Cf. A034691, A255397, A255903, A255906, A317532.

Sequence in context: A316939 A259478 A155706 * A231227 A231441 A284199

Adjacent sequences:  A317530 A317531 A317532 * A317534 A317535 A317536

KEYWORD

nonn

AUTHOR

Gus Wiseman, Jul 30 2018

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 April 19 10:34 EDT 2019. Contains 322252 sequences. (Running on oeis4.)