This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A325856 Number of integer partitions of n such that every pair of distinct parts has a different product. 11
 1, 1, 2, 3, 5, 7, 11, 15, 22, 30, 42, 56, 76, 100, 133, 171, 225, 287, 369, 467, 592, 740, 931, 1155, 1435, 1767, 2178, 2661, 3254, 3953, 4798, 5793, 6991, 8390, 10069, 12022, 14346, 17054, 20255, 23960, 28334, 33390, 39308, 46148, 54116, 63295, 73967, 86224 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS EXAMPLE The five partitions of 15 not satisfying the condition are:   (8,4,2,1)   (6,4,3,2)   (6,3,3,2,1)   (6,3,2,2,1,1)   (6,3,2,1,1,1,1) MATHEMATICA Table[Length[Select[IntegerPartitions[n], UnsameQ@@Times@@@Subsets[Union[#], {2}]&]], {n, 0, 30}] CROSSREFS The subset case is A196724. The maximal case is A325859. The integer partition case is A325856. The strict integer partition case is A325855. Cf. A002033, A108917, A143823, A325853, A325854, A325857, A325858, A325877. Sequence in context: A238869 A326333 A036011 * A104501 A242697 A218512 Adjacent sequences:  A325853 A325854 A325855 * A325857 A325858 A325859 KEYWORD nonn AUTHOR Gus Wiseman, May 31 2019 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 18 06:42 EDT 2019. Contains 326072 sequences. (Running on oeis4.)