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 A101421 Numbers which are the sum of two positive cubes and divisible by 7. 7
 28, 35, 91, 126, 133, 189, 217, 224, 280, 539, 637, 686, 728, 756, 854, 945, 1001, 1008, 1064, 1358, 1456, 1512, 1547, 1729, 1736, 1792, 2198, 2205, 2240, 2261, 2331, 2457, 2709, 2926, 3059, 3087, 3402, 3500, 3528, 3591, 4123, 4221, 4312, 4375, 4914, 4921 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 MATHEMATICA upto[n_] := Block[{t}, Union@ Reap[Do[If[Mod[t = x^3 + y^3, 7] == 0, Sow@t], {x, n^(1/3)}, {y, Min[x, (n - x^3)^(1/3)]}]][[2, 1]]]; upto[5000] (* Giovanni Resta, Jun 12 2020 *) CROSSREFS Cf. A003325. Sequence in context: A146077 A260637 A143186 * A039347 A043170 A043950 Adjacent sequences:  A101418 A101419 A101420 * A101422 A101423 A101424 KEYWORD nonn AUTHOR Jun Mizuki (suzuki32(AT)sanken.osaka-u.ac.jp), Jan 17 2005 EXTENSIONS Changed offset from 0 to 1 by Vincenzo Librandi, May 08 2013 STATUS approved

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Last modified May 14 07:13 EDT 2021. Contains 343879 sequences. (Running on oeis4.)