|
|
A365925
|
|
Number of subset-sums of strict integer partitions of n.
|
|
22
|
|
|
1, 2, 2, 6, 6, 10, 17, 22, 29, 42, 59, 74, 102, 130, 171, 226, 281, 356, 454, 566, 699, 896, 1080, 1342, 1637, 2006, 2413, 2962, 3548, 4286, 5114, 6148, 7272, 8738, 10268, 12224, 14387, 16996, 19863, 23450, 27257, 31984, 37187, 43364, 50173, 58428, 67322
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,2
|
|
COMMENTS
|
This is the "not necessarily positive" version, cf. A284640.
|
|
LINKS
|
|
|
EXAMPLE
|
The a(6) = 17 ways, showing each strict partition and its subset-sums:
(6): 0,6
(51): 0,1,5,6
(42): 0,2,4,6
(321): 0,1,2,3,4,5,6
|
|
MATHEMATICA
|
Table[Total[Length[Union[Total/@Subsets[#]]]& /@ Select[IntegerPartitions[n], UnsameQ@@#&]], {n, 30}]
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|