The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A186646 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A186646

Every fourth term of the sequence of natural numbers 1,2,3,4,... is halved.
(history; published version)

#109 by Joerg Arndt at Tue Dec 12 07:45:26 EST 2023

STATUS

proposed

approved

#108 by Paolo P. Lava at Tue Dec 12 07:23:07 EST 2023

STATUS

editing

proposed

#107 by Paolo P. Lava at Tue Dec 12 07:23:04 EST 2023

FORMULA

a(n) = (n/48)*(13*(n mod 4) + 7*((n+1) mod 4) + 7*((n+2) mod 4) + ((n+3) mod 4)). - Paolo P. Lava, Mar 10 2011

STATUS

approved

editing

#106 by Joerg Arndt at Wed Jan 11 05:13:53 EST 2023

STATUS

reviewed

approved

#105 by Michel Marcus at Wed Jan 11 01:47:07 EST 2023

STATUS

proposed

reviewed

#104 by Chai Wah Wu at Tue Jan 10 23:10:11 EST 2023

STATUS

editing

proposed

#103 by Chai Wah Wu at Tue Jan 10 23:10:06 EST 2023

PROG

(Python)

def A186646(n): return n if n&3 else n>>1 # Chai Wah Wu, Jan 10 2023

STATUS

approved

editing

#102 by Michel Marcus at Mon Nov 28 08:18:10 EST 2022

STATUS

proposed

approved

#101 by Michel Marcus at Mon Nov 28 08:18:05 EST 2022

STATUS

editing

proposed

#100 by Michel Marcus at Mon Nov 28 08:17:56 EST 2022

LINKS

<a href="/index/Rec#order_08">Index entries for linear recurrences with constant coefficients</a>, signature (0,0,0,2,0,0,0,-1).

STATUS

reviewed

editing

Discussion

Mon Nov 28

08:18

Michel Marcus: just a period