The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A051334 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A051334

Euclid-Mullin sequence (A000945) with initial value a(1)=8191 instead of a(1)=2.
(history; published version)

#21 by Michel Marcus at Tue Aug 18 08:01:34 EDT 2015

STATUS

reviewed

approved

#20 by Joerg Arndt at Tue Aug 18 07:52:38 EDT 2015

STATUS

proposed

reviewed

Discussion

Tue Aug 18

08:01

Michel Marcus: could have returned factor(n)[1, 1] directly

#19 by Anders Hellström at Tue Aug 18 07:35:52 EDT 2015

STATUS

editing

proposed

#18 by Anders Hellström at Tue Aug 18 07:35:47 EDT 2015

PROG

(PARI) spf(n)=my(f=factor(n)[1, 1]); f;

first(m)={my(v=vector(m)); v[1]=8191; for(i=2, m, v[i]=spf(1+prod(j=1, i-1, v[j]))); v; } /* Anders Hellström, Aug 18 2015 */

STATUS

approved

editing

#17 by N. J. A. Sloane at Tue Oct 15 22:30:30 EDT 2013

AUTHOR

Labos E. (labos(AT)ana.sote.hu)

Labos Elemer

Discussion

Tue Oct 15

22:30

OEIS Server: https://oeis.org/edit/global/2029

#16 by Charles R Greathouse IV at Tue Oct 09 15:33:25 EDT 2012

STATUS

proposed

approved

#15 by Sean A. Irvine at Tue Oct 09 14:55:30 EDT 2012

STATUS

editing

proposed

#14 by Sean A. Irvine at Tue Oct 09 14:55:16 EDT 2012

LINKS

Sean A. Irvine, <a href="/A051334/b051334.txt">Table of n, a(n) for n = 1..59</a>

STATUS

approved

editing

#13 by Charles R Greathouse IV at Fri Sep 21 01:17:36 EDT 2012

STATUS

editing

approved

#12 by Charles R Greathouse IV at Fri Sep 21 01:17:28 EDT 2012

DATA

8191, 2, 3, 7, 53, 1399, 5, 19, 646843, 26945441, 109, 443, 90670999, 280460690293140589, 907, 16293787, 3655513, 499483, 131, 21067, 143797, 54540542259000816707816058313971443, 392963, 977, 11, 5021, 179, 439, 353, 34417238589462247, 1193114397863177, 13, 59, 31643, 79399, 73, 43, 16639867

EXTENSIONS

a(30)-a(38) from Charles R Greathouse IV, Sep 21 2012

STATUS

proposed

editing