The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A058143 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing all changes.

A058143

Number of commutative monoids of order n with 2 idempotents.
(history; published version)

#10 by Michael De Vlieger at Tue Feb 15 13:57:33 EST 2022

STATUS

reviewed

approved

#9 by Michel Marcus at Tue Feb 15 13:06:48 EST 2022

STATUS

proposed

reviewed

#8 by Andrew Howroyd at Tue Feb 15 12:48:07 EST 2022

STATUS

editing

proposed

#7 by Andrew Howroyd at Tue Feb 15 12:41:37 EST 2022

DATA

1, 3, 9, 26, 98, 455, 4018, 101910, 10054303

EXTENSIONS

a(8)-a(10) from Andrew Howroyd, Feb 15 2022

STATUS

approved

editing

#6 by Russ Cox at Fri Mar 30 17:37:11 EDT 2012

AUTHOR

_Christian G. Bower (bowerc(AT)usa.net), _, Nov 14 2000

Discussion

Fri Mar 30

17:37

OEIS Server: https://oeis.org/edit/global/178

#5 by Russ Cox at Sun Jul 10 18:41:22 EDT 2011

LINKS

<a href="/Sindx_index/Mo.html#monoids">Index entries for sequences related to monoids</a>

Discussion

Sun Jul 10

18:41

OEIS Server: https://oeis.org/edit/global/59

#4 by N. J. A. Sloane at Thu Nov 11 07:34:06 EST 2010

LINKS

<a href="/Sindx_Mo.html#monoids">Index entries for sequences related to monoids</a>

KEYWORD

nonn,more,new

#3 by N. J. A. Sloane at Fri Feb 27 03:00:00 EST 2009

LINKS

<a href="http://www.research.att.com/~njas/sequences/Sindx_Mo.html#monoids">Index entries for sequences related to monoids</a>

KEYWORD

nonn,more,new

#2 by N. J. A. Sloane at Sat Jun 12 03:00:00 EDT 2004

NAME

Commutative Number of commutative monoids of order n with 2 idempotents.

KEYWORD

nonn,more,new

#1 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003

NAME

Commutative monoids of order n with 2 idempotents.

DATA

1, 3, 9, 26, 98, 455

OFFSET

2,2

LINKS

<a href="http://www.research.att.com/~njas/sequences/Sindx_Mo.html#monoids">Index entries for sequences related to monoids</a>

CROSSREFS

Column 2 of A058142.

KEYWORD

nonn,more

AUTHOR

Christian G. Bower (bowerc(AT)usa.net), Nov 14 2000

STATUS

approved