The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A222186 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A222186

a(n) = number of distinct ways to choose a subset of the n*2^(n-1) edges of the n-cube so that the resulting figure is connected and fully n-dimensional.
(history; published version)

#33 by N. J. A. Sloane at Thu Feb 14 14:18:55 EST 2013

STATUS

editing

approved

#32 by N. J. A. Sloane at Thu Feb 14 14:18:52 EST 2013

LINKS

Andrew Weimholt, <a href="/A222186/a222186.cpp.txt">C++ program for A222186 and A222192</a>

STATUS

approved

editing

#31 by N. J. A. Sloane at Thu Feb 14 14:09:30 EST 2013

STATUS

editing

approved

#30 by N. J. A. Sloane at Thu Feb 14 14:09:27 EST 2013

LINKS

N. J. A. Sloane, Andrew Weimholt, <a href="/A222186/a222186.txt">TITLE FOR LINKC++ program for A222186 and A222192</a>

STATUS

approved

editing

#29 by N. J. A. Sloane at Thu Feb 14 14:06:40 EST 2013

STATUS

editing

approved

#28 by N. J. A. Sloane at Thu Feb 14 14:06:38 EST 2013

COMMENTS

Suggested by Sol LeWitt's work "Variations of Incomplete Open Cubes," which appears to show shows 122 of the 123 figures in the three-dimensional case.

LINKS

Sol LeWitt, <a href="http://25.media.tumblr.com/tumblr_masbbafJ4K1rf1adro1_1280.jpg">Variations of Incomplete Open Cubes</a> [Note that the The full cube itself is not included in his list.]

N. J. A. Sloane, <a href="/A222186/a222186.txt">TITLE FOR LINK</a>

STATUS

approved

editing

#27 by Joerg Arndt at Wed Feb 13 04:36:58 EST 2013

STATUS

reviewed

approved

#26 by Andrew Weimholt at Wed Feb 13 00:15:21 EST 2013

STATUS

proposed

reviewed

#25 by Andrew Weimholt at Wed Feb 13 00:14:42 EST 2013

STATUS

editing

proposed

#24 by Andrew Weimholt at Wed Feb 13 00:14:06 EST 2013

DATA

1, 3, 123, 14632581

LINKS

Andrew Weimholt, <a href="/A222186/a222186.dat.txt">3D solutions in numerical representation</a>

Andrew Weimholt, <a href="/A222186/a222186_1.dat.txt">Notes on reading the 3D solutions</a>

EXTENSIONS

a(4) computed by Andrew Weimholt, Feb 13 2013

STATUS

approved

editing