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A165289
Nonnegative integers of the form m^2 - floor(m^(2/3))^3 where m is a positive integer.
5
0, 1, 3, 8, 9, 12, 15, 17, 18, 19, 22, 24, 30, 36, 37, 38, 40, 44, 55, 57, 64, 65, 68, 71, 73, 79, 80, 89, 97, 98, 100, 101, 106, 107, 108, 112, 113, 119, 121, 128, 129, 138, 141, 145, 148, 151, 154, 156, 161, 163, 164, 168, 169, 171, 172, 190, 196, 197, 198, 204, 208
OFFSET
1,3
COMMENTS
The positive terms form a subsequence of A087286. Some terms of A087286 are missing here, the smallest such number being 3781 = (6^3)^2 - (6^2-1)^3. [From Max Alekseyev, Jun 19 2011]
MATHEMATICA
lst={}; Do[a=(x=n^2)-(y=Floor[(n^2)^(1/3)]^3); If[a<=416, AppendTo[lst, a]], {n, 8!}]; Take[Union@lst, 100]
CROSSREFS
Sequence in context: A084387 A080761 A087286 * A066494 A082721 A239388
KEYWORD
nonn
AUTHOR
EXTENSIONS
Minor edits by N. J. A. Sloane, Oct 24 2009
Definition corrected by Max Alekseyev, Jun 19 2011
STATUS
approved