The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A006405

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

A006405

Number of unsensed 2-connected maps without faces of degree 2.
(history; published version)

#13 by Alois P. Heinz at Sun Apr 02 20:46:43 EDT 2017

STATUS

proposed

approved

#12 by Sean A. Irvine at Sun Apr 02 20:24:19 EDT 2017

STATUS

editing

proposed

#11 by Sean A. Irvine at Sun Apr 02 20:24:02 EDT 2017

NAME

Number of unsensed 2-connected maps without faces of degree 2.

DATA

1, 1, 2, 5, 9, 24, 70, 222, 785, 3055

EXTENSIONS

a(11) and a(12) from Sean A. Irvine, Apr 02 2017

STATUS

approved

editing

#10 by Russ Cox at Fri Mar 30 16:44:58 EDT 2012

AUTHOR

_N. J. A. Sloane (njas(AT)research.att.com)_.

Discussion

Fri Mar 30

16:44

OEIS Server: https://oeis.org/edit/global/110

#9 by N. J. A. Sloane at Tue Jun 01 03:00:00 EDT 2010

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

KEYWORD

nonn,new

nonn

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

KEYWORD

nonn,new

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

#7 by N. J. A. Sloane at Thu Feb 19 03:00:00 EST 2004

NAME

Number of 2-connected maps without faces of degree 2.

KEYWORD

nonn,new

nonn

#6 by N. J. A. Sloane at Mon May 08 03:00:00 EDT 2000

REFERENCES

Walsh, T. R. S.; Generating nonisomorphic maps without storing them. SIAM J. Algebraic Discrete Methods 4 (1983), no. 2, 161-178.

KEYWORD

nonn,new

nonn

#5 by N. J. A. Sloane at Sat Dec 11 03:00:00 EST 1999

REFERENCES

SIAA Walsh, T. R.; Generating nonisomorphic maps without storing them. SIAM J. Algebraic Discrete Methods 4 174 83(1983), no. 2, 161-178.

KEYWORD

nonn,new

nonn

AUTHOR

ssc,njas

njas

#4 by N. J. A. Sloane at Sun Jun 14 03:00:00 EDT 1998

KEYWORD

,new

nonn