The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A003347

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A003347

Numbers that are the sum of 2 positive 5th powers.
(history; published version)

#28 by Alois P. Heinz at Fri Sep 09 17:24:40 EDT 2022

STATUS

proposed

approved

#27 by Michael De Vlieger at Fri Sep 09 15:12:46 EDT 2022

STATUS

editing

proposed

#26 by Michael De Vlieger at Fri Sep 09 15:12:37 EDT 2022

MATHEMATICA

SelectWith[{k = 5}, Union@ Map[(#[[1]]^k + #[[2]]^k) &, Tuples[Range[10^59], Length@ DeleteCases[PowersRepresentations[#, {2, 5], _?(MemberQ[#, 0}] &)] > 0 &] (* Michael De Vlieger, Sep 09 2022 , after _Harvey P. Dale_ at A004999 *)

STATUS

proposed

editing

Discussion

Fri Sep 09

15:12

Michael De Vlieger: Faster program.

#25 by Michael De Vlieger at Fri Sep 09 15:05:44 EDT 2022

STATUS

editing

proposed

#24 by Michael De Vlieger at Fri Sep 09 15:05:39 EDT 2022

LINKS

Samuel S. Wagstaff, Jr., <a href="https://cs.uwaterloo.ca/journals/JIS/VOL25/Wagstaff/wagstaff8.html">Equal Sums of Two Distinct Like Powers</a>, J. Int. Seq., Vol. 25 (2022), Article 22.3.1.

MATHEMATICA

Select[Range[10^5], Length@ DeleteCases[PowersRepresentations[#, 2, 5], _?(MemberQ[#, 0] &)] > 0 &] (* Michael De Vlieger, Sep 09 2022 *)

STATUS

approved

editing

#23 by Sean A. Irvine at Sat Jul 31 17:04:27 EDT 2021

STATUS

editing

approved

#22 by Sean A. Irvine at Sat Jul 31 17:04:02 EDT 2021

CROSSREFS

Cf. A000584 (fifth powers), A088703 (2 distinct positive), A003336 (4th), A003358 (6th).

Cf. A000584, A003336, A003348, A003358, A088703.

STATUS

approved

editing

#21 by OEIS Server at Tue Aug 04 15:08:12 EDT 2020

LINKS

David A. Corneth, <a href="/A003347/b003347_1.txt">Table of n, a(n) for n = 1..10000</a> (first 1000 terms from T. D. Noe)

#20 by Alois P. Heinz at Tue Aug 04 15:08:12 EDT 2020

STATUS

reviewed

approved

Discussion

Tue Aug 04

15:08

OEIS Server: Installed new b-file as b003347.txt.  Old b-file is now b003347_1.txt.

#19 by Hugo Pfoertner at Tue Aug 04 14:29:06 EDT 2020

STATUS

proposed

reviewed