The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A001093

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A001093

a(n) = n^3 + 1.
(history; published version)

#60 by Joerg Arndt at Fri Mar 01 05:25:12 EST 2024

STATUS

editing

approved

#59 by Joerg Arndt at Fri Mar 01 05:25:09 EST 2024

COMMENTS

a(n) mod 10 belongs to a periodic sequence: 0, 1, 2, 9, 8, 5, 6, 7, 4, 3. We conclude that a(n) and a(n+10) have the same number of units. - Mohamed Bouhamida, Sep 05 2009

STATUS

proposed

editing

#58 by Michel Marcus at Fri Mar 01 03:21:48 EST 2024

STATUS

editing

proposed

#57 by Michel Marcus at Fri Mar 01 03:21:45 EST 2024

COMMENTS

Number of units of a(n) mod 10 belongs to a periodic sequence: 0, 1, 2, 9, 8, 5, 6, 7, 4, 3. We conclude that a(n) and a(n+10) have the same number of units. - Mohamed Bouhamida, Sep 05 2009

STATUS

approved

editing

#56 by Michel Marcus at Wed Jan 20 04:18:10 EST 2021

STATUS

reviewed

approved

#55 by Joerg Arndt at Wed Jan 20 03:38:05 EST 2021

STATUS

proposed

reviewed

#54 by Amiram Eldar at Wed Jan 20 02:01:12 EST 2021

STATUS

editing

proposed

#53 by Amiram Eldar at Wed Jan 20 01:49:31 EST 2021

FORMULA

Product_{n>=1} (1 - 1/a(n)) = Pi*sech(sqrt(3)*Pi/2). - Amiram Eldar, Jan 20 2021

STATUS

approved

editing

#52 by Bruno Berselli at Fri Nov 06 03:52:30 EST 2020

STATUS

reviewed

approved

#51 by Michel Marcus at Fri Nov 06 02:44:51 EST 2020

STATUS

proposed

reviewed