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A025379 Numbers that are the sum of 4 distinct nonzero squares in exactly 4 ways. 3
142, 158, 162, 165, 182, 183, 195, 206, 207, 214, 215, 218, 226, 239, 243, 245, 259, 260, 262, 263, 289, 298, 299, 300, 301, 317, 324, 329, 331, 337, 355, 364, 372, 373, 389, 409, 428, 436, 452, 461, 484, 532, 548, 556, 568, 580, 632, 648, 728, 824, 856, 872, 904 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
FORMULA
{n: A025443(n) = 4}. - R. J. Mathar, Jun 15 2018
MATHEMATICA
With[{nn=40}, Select[Union[Select[Tally[Total/@Subsets[Range[nn]^2, {4}]], #[[2]] == 4&][[All, 1]]], #<=nn^2-14&]] (* Harvey P. Dale, May 03 2020 *)
CROSSREFS
Sequence in context: A172764 A172836 A087001 * A202279 A035702 A172335
KEYWORD
nonn
AUTHOR
STATUS
approved

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Last modified April 15 12:37 EDT 2024. Contains 371687 sequences. (Running on oeis4.)