This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A322789 Irregular triangle read by rows where if d|n then T(n,d) is the number of non-isomorphic uniform multiset partitions of a multiset with d copies of each integer from 1 to n/d. 1
 1, 2, 2, 2, 2, 3, 4, 3, 2, 2, 4, 7, 6, 4, 2, 2, 4, 10, 8, 4, 3, 7, 3, 4, 12, 8, 4 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS A multiset partition is uniform if all parts have the same size. LINKS EXAMPLE Triangle begins:   1   2  2   2  2   3  4  3   2  2   4  7  6  4   2  2   4 10  8  4   3  7  3   4 12  8  4 Non-isomorphic representatives of the multiset partitions counted under row 6: {123456}           {112233}           {111222}           {111111} {123}{456}         {112}{233}         {111}{222}         {111}{111} {12}{34}{56}       {123}{123}         {112}{122}         {11}{11}{11} {1}{2}{3}{4}{5}{6} {11}{22}{33}       {11}{12}{22}       {1}{1}{1}{1}{1}{1}                    {11}{23}{23}       {12}{12}{12}                    {12}{13}{23}       {1}{1}{1}{2}{2}{2}                    {1}{1}{2}{2}{3}{3} CROSSREFS Row sums are A319056. First column is A000005. Cf. A001055, A005176, A056239, A072774, A100778, A295193, A306017, A306018, A319190, A319612, A322784, A322785, A322787, A322792. Sequence in context: A171931 A221530 A262944 * A069904 A164978 A119789 Adjacent sequences:  A322786 A322787 A322788 * A322790 A322791 A322792 KEYWORD nonn,tabf,more AUTHOR Gus Wiseman, Dec 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 October 18 01:03 EDT 2019. Contains 328135 sequences. (Running on oeis4.)