The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A290381

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A290381

Number of minimal dominating sets in the n-web graph.
(history; published version)

#13 by Peter Luschny at Fri Aug 04 03:15:10 EDT 2017

STATUS

reviewed

approved

#12 by Michel Marcus at Fri Aug 04 01:22:30 EDT 2017

STATUS

proposed

reviewed

#11 by Eric W. Weisstein at Fri Aug 04 01:16:42 EDT 2017

STATUS

editing

proposed

#10 by Eric W. Weisstein at Fri Aug 04 01:16:40 EDT 2017

LINKS

Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/DominatingSetMinimalDominatingSet.html">Minimal Dominating Set</a>

STATUS

approved

editing

#9 by Alois P. Heinz at Tue Aug 01 15:33:38 EDT 2017

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proposed

approved

#8 by Colin Barker at Tue Aug 01 14:32:41 EDT 2017

STATUS

editing

proposed

#7 by Colin Barker at Tue Aug 01 14:32:14 EDT 2017

FORMULA

Empirical g.f.: x^3*(22 + 31*x + 49*x^2 - 24*x^3 + 12*x^4 - 40*x^5) / (1 - x - 2*x^2 - 5*x^3 - 4*x^4 - 4*x^5 + 8*x^6). - Colin Barker, Aug 01 2017

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proposed

editing

#6 by Andrew Howroyd at Tue Aug 01 12:49:01 EDT 2017

STATUS

editing

proposed

#5 by Andrew Howroyd at Tue Aug 01 12:22:53 EDT 2017

DATA

22, 53, 146, 338, 995, 2661, 6961, 18770, 50161, 134426, 359126, 960419, 2570837, 6875493, 18392182, 49200125, 131613970, 352077098, 941809667, 2519398997, 6739522745, 18028532346, 48227208121, 129010104410, 345108392014, 923181669827, 2469555755813

LINKS

Andrew Howroyd, <a href="/A290381/b290381.txt">Table of n, a(n) for n = 3..200</a>

FORMULA

Empirical: a(n) = a(n-1)+2*a(n-2)+5*a(n-3) +4*a(n-4)+4*a(n-5)-8*a(n-6) for n>8. - Andrew Howroyd, Aug 01 2017

CROSSREFS

Cf. A287474, A290336.

KEYWORD

nonn,more,new

EXTENSIONS

Terms a(7) and beyond from Andrew Howroyd, Aug 01 2017

STATUS

approved

editing

#4 by N. J. A. Sloane at Sat Jul 29 19:33:34 EDT 2017

STATUS

proposed

approved