The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A193217 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A193217

Number of non-Wiener index-unique simple connected graphs on n nodes.
(history; published version)

#11 by Alois P. Heinz at Thu Jan 04 19:11:54 EST 2024

STATUS

proposed

approved

#10 by Andrew Howroyd at Thu Jan 04 18:52:13 EST 2024

STATUS

editing

proposed

#9 by Andrew Howroyd at Thu Jan 04 18:45:11 EST 2024

LINKS

Eric Weisstein's World of Mathematica, Mathematics, <a href="http://mathworld.wolfram.com/WienerIndex.html">Wiener Index</a>

STATUS

approved

editing

#8 by R. J. Mathar at Sat Mar 31 11:14:19 EDT 2012

STATUS

editing

approved

#7 by R. J. Mathar at Sat Mar 31 11:14:12 EDT 2012

LINKS

Eric Weisstein's World of Mathematica, <a href="http://mathworld.wolfram.com/WienerIndex.html">Wiener Index</a<>

STATUS

approved

editing

#6 by Russ Cox at Fri Mar 30 17:35:12 EDT 2012

AUTHOR

_Eric W. Weisstein (eric(AT)weisstein.com), _, Jul 18 2011

Discussion

Fri Mar 30

17:35

OEIS Server: https://oeis.org/edit/global/166

#5 by T. D. Noe at Mon Jul 18 17:38:26 EDT 2011

STATUS

proposed

approved

#4 by Eric W. Weisstein at Mon Jul 18 08:30:05 EDT 2011

STATUS

editing

proposed

#3 by Eric W. Weisstein at Mon Jul 18 08:30:02 EDT 2011

DATA

0, 0, 0, 2, 16, 108, 847, 11110, 261072

KEYWORD

nonn,changed,hard,more

#2 by Eric W. Weisstein at Mon Jul 18 08:15:50 EDT 2011

NAME

allocated for Eric W. Weisstein

Number of non-Wiener index-unique simple connected graphs on n nodes.

DATA

0, 0, 0, 2, 16, 108, 847, 11110

OFFSET

1,4

COMMENTS

The paw graph and square graph C_4 on 4 have common Wiener index 8, while all other connected simple graphs on 4 nodes have unique Wiener indices, so a(4) = 2.

LINKS

Eric Weisstein's World of Mathematica, <a href="http://mathworld.wolfram.com/WienerIndex.html">Wiener Index</a<

KEYWORD

allocated

nonn

AUTHOR

Eric W. Weisstein (eric(AT)weisstein.com), Jul 18 2011

STATUS

approved

editing