|
| |
|
|
A046101
|
|
Biquadrateful numbers.
|
|
6
| |
|
|
16, 32, 48, 64, 80, 81, 96, 112, 128, 144, 160, 162, 176, 192, 208, 224, 240, 243, 256, 272, 288, 304, 320, 324, 336, 352, 368, 384, 400, 405, 416, 432, 448, 464, 480, 486, 496, 512, 528, 544, 560, 567, 576, 592, 608, 624, 625, 640, 648, 656, 672, 688, 704
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| The convention in the OEIS is that squareful, cubeful (A046099), biquadrateful,... mean the same as "not squarefree" etc., while 2- or square-full, 3- or cube-full (A036966), 4-full (A036967) are used for Golomb's notion of powerful numbers (A001694, see references there), when each prime factor occurs to a power > 1. - M. F. Hasler (www.univ-ag.fr/~mhasler), Feb 12 2008
|
|
|
LINKS
| T. D. Noe, Table of n, a(n) for n=1..1000
Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
|
|
|
MATHEMATICA
| lst={}; Do[a=0; Do[If[FactorInteger[m][[n, 2]]>3, a=1], {n, Length[FactorInteger[m]]}]; If[a==1, AppendTo[lst, m]], {m, 10^3}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Aug 15 2008]
|
|
|
CROSSREFS
| Cf. A046100.
Cf. A046099, A036967, A001694.
Sequence in context: A055075 A048111 A122614 * A044856 A044901 A008598
Adjacent sequences: A046098 A046099 A046100 * A046102 A046103 A046104
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Eric Weisstein (eric(AT)weisstein.com)
|
| |
|
|
