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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A318357 Number of non-isomorphic strict multiset partitions of the multiset of prime indices of n. 1
1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 3, 1, 2, 2, 2, 1, 3, 1, 3, 2, 2, 1, 5, 1, 2, 2, 3, 1, 3, 1, 3, 2, 2, 2, 4, 1, 2, 2, 5, 1, 3, 1, 3, 3, 2, 1, 7, 1, 3, 2, 3, 1, 5, 2, 5, 2, 2, 1, 7, 1, 2, 3, 4, 2, 3, 1, 3, 2, 3, 1, 9, 1, 2, 3, 3, 2, 3, 1, 7, 2, 2, 1, 7, 2, 2, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,6

LINKS

Table of n, a(n) for n=1..87.

EXAMPLE

Non-isomorphic representatives of the a(48) = 7 strict multiset partitions of {1,1,1,1,2}:

  {{1,1,1,1,2}}

  {{1},{1,1,1,2}}

  {{2},{1,1,1,1}}

  {{1,1},{1,1,2}}

  {{1,2},{1,1,1}}

  {{1},{2},{1,1,1}}

  {{1},{1,1},{1,2}}

CROSSREFS

Cf. A001055, A007716, A045778, A056239, A112798, A316980, A317533, A317776, A317791, A318287.

Sequence in context: A140774 A056924 A316364 * A323091 A045778 A320889

Adjacent sequences:  A318354 A318355 A318356 * A318358 A318359 A318360

KEYWORD

nonn

AUTHOR

Gus Wiseman, Aug 24 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 March 23 02:39 EDT 2019. Contains 321422 sequences. (Running on oeis4.)