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A290381 Number of minimal dominating sets in the n-web graph. 2
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

LINKS

Andrew Howroyd, Table of n, a(n) for n = 3..200

Eric Weisstein's World of Mathematics, Minimal Dominating Set

Eric Weisstein's World of Mathematics, Web Graph

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

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

CROSSREFS

Cf. A287474, A290336.

Sequence in context: A277979 A177726 A101571 * A122502 A244212 A303582

Adjacent sequences:  A290378 A290379 A290380 * A290382 A290383 A290384

KEYWORD

nonn

AUTHOR

Eric W. Weisstein, Jul 28 2017

EXTENSIONS

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

STATUS

approved

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Last modified February 17 17:12 EST 2019. Contains 320222 sequences. (Running on oeis4.)