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Revision History for A084272

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

A084272

Number of labeled 4-chromatic (i.e., chromatic number = 4) graphs on n nodes.
(history; published version)

#12 by Joerg Arndt at Sun Dec 02 03:00:32 EST 2018

STATUS

reviewed

approved

#11 by Michel Marcus at Sun Dec 02 01:51:30 EST 2018

STATUS

proposed

reviewed

#10 by Andrew Howroyd at Sun Dec 02 01:50:13 EST 2018

STATUS

editing

proposed

#9 by Andrew Howroyd at Sun Dec 02 01:40:34 EST 2018

CROSSREFS

Cf. A084270, A084271, A084279, A084280.

#8 by Andrew Howroyd at Sun Dec 02 01:33:41 EST 2018

DATA

0, 0, 0, 1, 65, 5042, 605545, 120653315, 40885736829, 23907349095479, 24391928745798217

FORMULA

a(n) = A084280(n) - A084279(n). - Andrew Howroyd, Dec 02 2018

EXTENSIONS

a(7)-a(11) from Andrew Howroyd, Dec 02 2018

STATUS

approved

editing

#7 by Jon E. Schoenfield at Sat Jul 29 12:33:44 EDT 2017

STATUS

editing

approved

#6 by Jon E. Schoenfield at Sat Jul 29 12:33:41 EDT 2017

NAME

Number of labeled 4-chromatic (i.e. , chromatic number = 4) graphs on n nodes.

STATUS

approved

editing

#5 by Jon E. Schoenfield at Thu Jul 30 01:44:56 EDT 2015

STATUS

editing

approved

#4 by Jon E. Schoenfield at Thu Jul 30 01:44:55 EDT 2015

AUTHOR

Eric W. Weisstein, May 24, 2003

STATUS

approved

editing

#3 by Russ Cox at Sat Mar 31 12:38:56 EDT 2012

AUTHOR

_Eric W. Weisstein (eric(AT)weisstein.com), _, May 24, 2003

Discussion

Sat Mar 31

12:38

OEIS Server: https://oeis.org/edit/global/877