The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A077015

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

A077015

a(1) = 1, continue by multiplying by the smallest composite number and then dividing by the smallest prime not used earlier and taking the integer part at every step.
(history; published version)

#12 by Andrew Howroyd at Sun Feb 20 11:59:11 EST 2022

STATUS

reviewed

approved

#11 by Omar E. Pol at Sun Feb 20 11:11:02 EST 2022

STATUS

proposed

reviewed

#10 by Michel Marcus at Sun Feb 20 11:05:32 EST 2022

STATUS

editing

proposed

#9 by Michel Marcus at Sun Feb 20 11:05:27 EST 2022

COMMENTS

For some k, n > k, a(n) = 0 for all n. What is the value of k?

EXAMPLE

a(2) = 1*4 = 4, a(3) = 4/2 = 2, a(4) = 2*6 = 12, a(5) = 12/3 = 4, a(6) = 4*8 = 32, a(7) = Floor[floor(32/5] ) = 6.

STATUS

approved

editing

#8 by Michel Marcus at Sun Feb 20 11:05:06 EST 2022

STATUS

reviewed

approved

#7 by Joerg Arndt at Sun Feb 20 10:34:01 EST 2022

STATUS

proposed

reviewed

#6 by Andrey Zabolotskiy at Sun Feb 20 10:06:44 EST 2022

STATUS

editing

proposed

#5 by Andrey Zabolotskiy at Sun Feb 20 10:06:42 EST 2022

CROSSREFS

Cf. A076916A077016.

STATUS

approved

editing

#4 by N. J. A. Sloane at Thu Dec 05 19:55:48 EST 2013

AUTHOR

_Amarnath Murthy (amarnath_murthy(AT)yahoo.com), _, Oct 28 2002

Discussion

Thu Dec 05

19:55

OEIS Server: https://oeis.org/edit/global/2075

#3 by Russ Cox at Sat Mar 31 13:21:28 EDT 2012

COMMENTS

All additional terms are zero. - Frank _Franklin T. Adams-Watters (FrankTAW(AT)Netscape.net), _, Sep 07 2006

EXTENSIONS

More terms from Frank _Franklin T. Adams-Watters (FrankTAW(AT)Netscape.net), _, Sep 07 2006

Discussion

Sat Mar 31

13:21

OEIS Server: https://oeis.org/edit/global/884