The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A283971

(Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

a(n) = n except a(4*n + 2) = 2*n + 1.
(history; published version)

#93 by Alois P. Heinz at Wed Jan 11 09:15:05 EST 2023

STATUS

reviewed

approved

#92 by Joerg Arndt at Wed Jan 11 09:13:55 EST 2023

STATUS

proposed

reviewed

#91 by Chai Wah Wu at Tue Jan 10 23:12:31 EST 2023

STATUS

editing

proposed

#90 by Chai Wah Wu at Tue Jan 10 23:12:28 EST 2023

PROG

(Python)

def A283971(n): return n if (n-2)&3 else n>>1 # Chai Wah Wu, Jan 10 2023

STATUS

approved

editing

#89 by Michel Marcus at Mon Nov 28 08:21:46 EST 2022

STATUS

reviewed

approved

#88 by Joerg Arndt at Mon Nov 28 08:00:01 EST 2022

STATUS

proposed

reviewed

#87 by Amiram Eldar at Mon Nov 28 07:09:37 EST 2022

STATUS

editing

proposed

#86 by Amiram Eldar at Mon Nov 28 06:59:56 EST 2022

CROSSREFS

#85 by Amiram Eldar at Mon Nov 28 06:59:10 EST 2022

FORMULA

Sum_{k=1..n} a(k) ~ (7/16) * n^2. - Amiram Eldar, Nov 28 2022

STATUS

approved

editing

#84 by N. J. A. Sloane at Thu Feb 27 10:53:51 EST 2020

STATUS

editing

approved