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A111399
Numbers in A048945 but not in A111398.
3
120, 168, 210, 216, 256, 264, 270, 280, 312, 330, 360, 378, 384, 390, 408, 420, 440, 456, 462, 480, 504, 510, 520, 540, 546, 552, 570, 594, 600, 616, 630, 640, 660, 672, 680, 690, 696, 702, 714, 728, 744, 750, 756, 760, 770, 780, 792, 798, 840
OFFSET
1,1
LINKS
MATHEMATICA
q[n_] := Module[{e = FactorInteger[n][[;; , 2]], prod}, (prod = Times @@ (e + 1)) != 8 && Divisible[prod * GCD @@ e, 8] ]; Select[Range[840], q] (* Amiram Eldar, Jan 02 2021 *)
PROG
(PARI) isok(n) = {prd = 1; fordiv(n, d, prd = prd*d); ispower(prd, 4) && (prd != n^4); } \\ Michel Marcus, Oct 04 2013
CROSSREFS
Sequence in context: A316835 A179642 A099832 * A030634 A272594 A377156
KEYWORD
nonn
AUTHOR
Ant King, Nov 11 2005
EXTENSIONS
More terms from Michel Marcus, Oct 04 2013
STATUS
approved