The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A322118 Number of non-isomorphic 2-connected multiset partitions of weight n with no singletons. 6
 1, 1, 2, 3, 7, 11, 29, 55, 155, 386, 1171 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS EXAMPLE Non-isomorphic representatives of the a(2) = 2 through a(6) = 29 multiset partitions:   {{1,1}}  {{1,1,1}}  {{1,1,1,1}}    {{1,1,1,1,1}}    {{1,1,1,1,1,1}}   {{1,2}}  {{1,2,2}}  {{1,1,2,2}}    {{1,1,2,2,2}}    {{1,1,1,2,2,2}}            {{1,2,3}}  {{1,2,2,2}}    {{1,2,2,2,2}}    {{1,1,2,2,2,2}}                       {{1,2,3,3}}    {{1,2,2,3,3}}    {{1,1,2,2,3,3}}                       {{1,2,3,4}}    {{1,2,3,3,3}}    {{1,2,2,2,2,2}}                       {{1,1},{1,1}}  {{1,2,3,4,4}}    {{1,2,2,3,3,3}}                       {{1,2},{1,2}}  {{1,2,3,4,5}}    {{1,2,3,3,3,3}}                                      {{1,1},{1,1,1}}  {{1,2,3,3,4,4}}                                      {{1,2},{1,2,2}}  {{1,2,3,4,4,4}}                                      {{2,2},{1,2,2}}  {{1,2,3,4,5,5}}                                      {{2,3},{1,2,3}}  {{1,2,3,4,5,6}}                                                       {{1,1},{1,1,1,1}}                                                       {{1,1,1},{1,1,1}}                                                       {{1,1,2},{1,2,2}}                                                       {{1,2},{1,1,2,2}}                                                       {{1,2},{1,2,2,2}}                                                       {{1,2},{1,2,3,3}}                                                       {{1,2,2},{1,2,2}}                                                       {{1,2,3},{1,2,3}}                                                       {{1,2,3},{2,3,3}}                                                       {{1,3,4},{2,3,4}}                                                       {{2,2},{1,1,2,2}}                                                       {{2,2},{1,2,2,2}}                                                       {{2,3},{1,2,3,3}}                                                       {{3,3},{1,2,3,3}}                                                       {{3,4},{1,2,3,4}}                                                       {{1,1},{1,1},{1,1}}                                                       {{1,2},{1,2},{1,2}}                                                       {{1,2},{1,3},{2,3}} CROSSREFS Cf. A002218, A007718, A013922, A030019, A056156, A275307, A304118, A304382, A304887, A305052, A305079, A321194, A322110, A322117. Sequence in context: A005479 A120856 A138000 * A323067 A140108 A034295 Adjacent sequences:  A322115 A322116 A322117 * A322119 A322120 A322121 KEYWORD nonn,more AUTHOR Gus Wiseman, Nov 26 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.

Last modified August 11 23:45 EDT 2020. Contains 336434 sequences. (Running on oeis4.)