OFFSET
1,1
COMMENTS
Extending the terminology of A124944, the "low mean" of a multiset is obtained by taking the mean and rounding down.
EXAMPLE
The terms together with their prime indices begin:
3: {2}
9: {2,2}
10: {1,3}
14: {1,4}
15: {2,3}
27: {2,2,2}
28: {1,1,4}
30: {1,2,3}
42: {1,2,4}
44: {1,1,5}
45: {2,2,3}
50: {1,3,3}
52: {1,1,6}
63: {2,2,4}
66: {1,2,5}
70: {1,3,4}
75: {2,3,3}
81: {2,2,2,2}
84: {1,1,2,4}
88: {1,1,1,5}
90: {1,2,2,3}
100: {1,1,3,3}
MATHEMATICA
prix[n_]:=If[n==1, {}, Flatten[Cases[FactorInteger[n], {p_, k_}:>Table[PrimePi[p], {k}]]]];
Select[Range[100], Floor[Mean[prix[#]]]==2&]
KEYWORD
nonn
AUTHOR
Gus Wiseman, Jul 05 2023
STATUS
approved