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#63 by Alois P. Heinz at Fri Feb 12 18:15:57 EST 2021
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#62 by Kevin Ryde at Fri Feb 12 18:11:47 EST 2021
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#61 by Kevin Ryde at Fri Feb 12 18:11:16 EST 2021
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Discussion
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| Fri Feb 12
| 18:11
| Kevin Ryde: Self-ref in crossrefs.
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#60 by Bruno Berselli at Wed Dec 02 09:48:23 EST 2020
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#59 by Michel Marcus at Wed Dec 02 07:42:49 EST 2020
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#58 by Bernard Schott at Wed Dec 02 06:15:12 EST 2020
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#57 by Bernard Schott at Wed Dec 02 06:14:12 EST 2020
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| COMMENTS
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a(n) = n iff n = 3 or 6 (see De Koninck & Mercier reerencereference). - Bernard Schott, Dec 02 2020
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| REFERENCES
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Jean-Marie De Koninck & Armel Mercier, 1001 Problèmes en Théorie Classique des Nombres, Problème 347 pp. 50 and 205, Ellipses, Paris, 2004.
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#56 by Bernard Schott at Wed Dec 02 03:38:51 EST 2020
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| COMMENTS
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a(n) = n iff n = 3 or 6 (see De Koninck & Mercier reerence). - Bernard Schott, Dec 02 2020
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| STATUS
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approved
editing
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#55 by N. J. A. Sloane at Fri Mar 29 12:08:00 EDT 2019
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#54 by N. J. A. Sloane at Fri Mar 29 12:07:57 EDT 2019
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| CROSSREFS
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A051628 is length of preamble.
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| STATUS
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approved
editing
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