A232979 - OEIS

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A232979

Number of acyclic orientations of the bi-iterative graph family G^4_n.

6, 90, 2826, 179874, 22988394, 5882561010, 3011536790874, 3083724807586146, 6315421830476086026, 25867919440922274113490, 211909896144041988220786746, 3471931327152422147338068920514, 113768242349516897374699301112595434, 7455915475175021412811907000511105871410

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,1

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..75

T. Kotek, J. A. Makowsky, Recurrence Relations for Graph Polynomials on Bi-iterative Families of Graphs, arXiv preprint arXiv:1309.4020, 2013

CROSSREFS

Cf. A232978.

Sequence in context: A177290 A000680 A013297 * A218758 A219304 A305324

Adjacent sequences: A232976 A232977 A232978 * A232980 A232981 A232982

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Dec 07 2013

EXTENSIONS

a(7)-a(13) from Alois P. Heinz, Dec 21 2013

STATUS

approved