The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A130483 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A130483

a(n) = Sum_{k=0..n} (k mod 5) (Partial sums of A010874).
(history; published version)

#45 by Charles R Greathouse IV at Thu Sep 08 08:45:30 EDT 2022

PROG

(MAGMAMagma) I:=[0, 1, 3, 6, 10, 10]; [n le 6 select I[n] else Self(n-1) + Self(n-5) - Self(n-6): n in [1..71]]; // G. C. Greubel, Aug 31 2019

Discussion

Thu Sep 08

08:45

OEIS Server: https://oeis.org/edit/global/2944

#44 by Michel Marcus at Fri Aug 14 01:48:07 EDT 2020

STATUS

reviewed

approved

#43 by Joerg Arndt at Fri Aug 14 01:32:06 EDT 2020

STATUS

proposed

reviewed

#42 by Michel Marcus at Thu Aug 13 09:15:20 EDT 2020

STATUS

editing

proposed

#41 by Michel Marcus at Thu Aug 13 09:15:13 EDT 2020

FORMULA

a(n) = 1/2 ( (n mod 5)^2 - 3*(n mod 5) +4n 4*n) /2. _- _Ammar Khatab_, Aug 13 2020

STATUS

proposed

editing

Discussion

Thu Aug 13

09:15

Michel Marcus: ok ?

#40 by Ammar Khatab at Thu Aug 13 08:59:56 EDT 2020

STATUS

editing

proposed

#39 by Ammar Khatab at Thu Aug 13 08:58:42 EDT 2020

FORMULA

a(n) = 1/2 ( (n mod 5)^2 -3(n mod 5)+4n) . Ammar Khatab, Aug 13 2020

STATUS

approved

editing

#38 by Joerg Arndt at Sun Sep 01 01:53:47 EDT 2019

STATUS

reviewed

approved

#37 by Michel Marcus at Sun Sep 01 01:50:15 EDT 2019

STATUS

proposed

reviewed

#36 by G. C. Greubel at Sat Aug 31 14:29:55 EDT 2019

STATUS

editing

proposed