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A364930
Products of primorials that are squareful but not prime powers.
5
36, 72, 144, 216, 288, 432, 576, 864, 900, 1152, 1296, 1728, 1800, 2304, 2592, 3456, 3600, 4608, 5184, 5400, 6912, 7200, 7776, 9216, 10368, 10800, 13824, 14400, 15552, 18432, 20736, 21600, 27000, 27648, 28800, 31104, 32400, 36864, 41472, 43200, 44100, 46656, 54000
OFFSET
1,1
COMMENTS
Proper subset of A055932.
Proper subset of A364710; contains k in {A025487 \ {A000079 U A002110}} that are not in A332785.
The only highly composite term is 36.
LINKS
Michael De Vlieger, Table of n, a(n) for n = 1..15402 (All terms k <= A002110(16))
FORMULA
This sequence is A364710 \ A332785.
Intersection of A025487 and A286708.
MATHEMATICA
(* Load May 19 2018 function f at A025487, then run the following: *)
Select[Union@ Flatten@ f[k], And[PrimeOmega[#] > PrimeNu[#] > 1, AllTrue[FactorInteger[#][[All, -1]], # > 1 &] ] &]
KEYWORD
nonn,easy
AUTHOR
Michael De Vlieger, Dec 12 2023
STATUS
approved