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#23 by Michael De Vlieger at Sat Jun 29 09:10:17 EDT 2024
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#22 by Michel Marcus at Fri Jun 28 12:16:05 EDT 2024
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Discussion
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| Fri Jun 28
| 14:00
| Michael De Vlieger: OK like this?
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#21 by Michel Marcus at Thu Jun 27 12:44:38 EDT 2024
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| COMMENTS
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The arrangementNumbers of the form A007691(k)*A054030(k)/2 whichwhen A054030(k) is an even number.
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| STATUS
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reviewed
editing
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#20 by Joerg Arndt at Thu Jun 27 02:12:18 EDT 2024
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Discussion
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| Thu Jun 27
| 02:13
| Joerg Arndt: wait; I did not read you pink-box comments #2 and #3
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| 10:21
| Michael De Vlieger: Holding.
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#19 by Michel Marcus at Thu Jun 27 01:58:47 EDT 2024
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#18 by Michel Marcus at Thu Jun 27 01:55:55 EDT 2024
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| COMMENTS
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The arrangementNumbers of the form sigma(A325637(nk))/2 from small to large. - Jinyuan Wang, Jun 09 2019
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| STATUS
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approved
editing
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Discussion
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| Thu Jun 27
| 01:57
| Michel Marcus: was : The arrangement of sigma(A325637(n))/2 from small to large. which raised a question in A325637; see A325637 history
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| 01:57
| Michel Marcus: 2nd comment The arrangement of A007691(k)*A054030(k)/2 which A054030(k) is an even number. would need to be edited too
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| 01:58
| Michel Marcus: suggestion : Numbers of the form A007691(k)*A054030(k)/2 when A054030(k) is an even number.
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#17 by Charles R Greathouse IV at Thu Sep 08 08:46:24 EDT 2022
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| PROG
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(MAGMAMagma) [n: n in [1..100000] | #[d: d in Divisors(n) | SumOfDivisors(d) eq 2*n] gt 0]
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Discussion
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| Thu Sep 08
| 08:46
| OEIS Server: https://oeis.org/edit/global/2944
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#16 by Joerg Arndt at Sun Jun 09 09:46:21 EDT 2019
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#15 by Vaclav Kotesovec at Sun Jun 09 08:03:09 EDT 2019
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#14 by Vaclav Kotesovec at Sun Jun 09 08:03:02 EDT 2019
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