The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A102199 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A102199

Iccanobirt semiprimes (9 of 15): Semiprime numbers in A102119.
(history; published version)

#10 by Alois P. Heinz at Sat Aug 14 07:03:11 EDT 2021

STATUS

proposed

approved

#9 by Jinyuan Wang at Sat Aug 14 06:22:02 EDT 2021

STATUS

editing

proposed

#8 by Jinyuan Wang at Sat Aug 14 06:21:56 EDT 2021

DATA

4, 26, 122309, 918349, 1892158, 46917727, 25411507, 629951893, 444564787601, 47147317432111, 6249165484647581, 68535341599076501, 49254291193918837, 70468687493735802121, 806424054403260562011601, 1987232535137485809825804281, 7450185554509682737733199157763041

OFFSET

0,1,1

EXTENSIONS

Offset changed to 1 and more terms from Jinyuan Wang, Aug 14 2021

STATUS

approved

editing

#7 by Russ Cox at Fri Mar 30 18:40:26 EDT 2012

AUTHOR

_Jonathan Vos Post (jvospost3(AT)gmail.com) _ and Ray Chandler, Dec 31 2004

Discussion

Fri Mar 30

18:40

OEIS Server: https://oeis.org/edit/global/228

#6 by Russ Cox at Fri Mar 30 17:29:21 EDT 2012

AUTHOR

Jonathan Vos Post (jvospost3(AT)gmail.com) and _Ray Chandler (rayjchandler(AT)sbcglobal.net), _, Dec 31 2004

Discussion

Fri Mar 30

17:29

OEIS Server: https://oeis.org/edit/global/154

#5 by Charles R Greathouse IV at Wed Dec 28 02:38:29 EST 2011

STATUS

editing

approved

#4 by Charles R Greathouse IV at Wed Dec 28 02:38:14 EST 2011

KEYWORD

nonn,less,base

STATUS

approved

editing

#3 by N. J. A. Sloane at Fri Jan 09 03:00:00 EST 2009

KEYWORD

nonn,new

nonn

AUTHOR

Jonathan Vos Post (jvospost2jvospost3(AT)yahoogmail.com) and Ray Chandler (rayjchandler(AT)sbcglobal.net), Dec 31 2004

#2 by N. J. A. Sloane at Fri Jan 12 03:00:00 EST 2007

KEYWORD

nonn,new

nonn

AUTHOR

Jonathan Vos Post (jvospost2(AT)yahoo.com) and Ray Chandler (RayChandlerrayjchandler(AT)alumni.tcusbcglobal.edunet), Dec 31 2004

#1 by N. J. A. Sloane at Sun Feb 20 03:00:00 EST 2005

NAME

Iccanobirt semiprimes (9 of 15): Semiprime numbers in A102119.

DATA

4, 26, 122309, 918349, 1892158, 46917727, 25411507, 629951893, 444564787601, 47147317432111, 6249165484647581, 68535341599076501, 49254291193918837, 70468687493735802121, 806424054403260562011601

OFFSET

0,1

FORMULA

a(n) = A102119(A102179(n)).

CROSSREFS

Cf. A001358, A102119, A102191-A102205.

KEYWORD

nonn

AUTHOR

Jonathan Vos Post (jvospost2(AT)yahoo.com) and Ray Chandler (RayChandler(AT)alumni.tcu.edu), Dec 31 2004

STATUS

approved