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A325779
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Heinz numbers of integer partitions for which every restriction to a subinterval has a different sum.
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8
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1, 2, 3, 5, 6, 7, 10, 11, 13, 14, 15, 17, 19, 21, 22, 23, 26, 29, 31, 33, 34, 35, 37, 38, 39, 41, 42, 43, 46, 47, 51, 53, 55, 57, 58, 59, 61, 62, 65, 66, 67, 69, 71, 73, 74, 77, 78, 79, 82, 83, 85, 86, 87, 89, 91, 93, 94, 95, 97, 101, 102, 103, 105, 106, 107
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OFFSET
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1,2
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COMMENTS
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First differs from A301899 in having 462.
The enumeration of these partitions by sum is given by A325768.
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LINKS
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EXAMPLE
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Most small numbers are in the sequence. However, the sequence of non-terms together with their prime indices begins:
4: {1,1}
8: {1,1,1}
9: {2,2}
12: {1,1,2}
16: {1,1,1,1}
18: {1,2,2}
20: {1,1,3}
24: {1,1,1,2}
25: {3,3}
27: {2,2,2}
28: {1,1,4}
30: {1,2,3}
32: {1,1,1,1,1}
36: {1,1,2,2}
40: {1,1,1,3}
44: {1,1,5}
45: {2,2,3}
48: {1,1,1,1,2}
49: {4,4}
50: {1,3,3}
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MATHEMATICA
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primeMS[n_]:=If[n==1, {}, Flatten[Cases[FactorInteger[n], {p_, k_}:>Table[PrimePi[p], {k}]]]];
Select[Range[100], UnsameQ@@ReplaceList[primeMS[#], {___, s__, ___}:>Plus[s]]&]
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CROSSREFS
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Cf. A000041, A002033, A056239, A103300, A112798, A143823, A169942, A299702, A301899, A325676, A325768, A325769, A325770, A325778.
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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