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A246998 Multiplicity of the zero at x=1 of the characteristic polynomial P_n^{C0+}. 0
1, 2, 2, 3, 3, 5, 5, 8, 9, 14, 16, 26, 31, 49, 64, 99, 133, 209, 291, 455, 657, 1022, 1510, 2359, 3545, 5536, 8442, 13201, 20319, 31836, 49353, 77436, 120711, 189674, 296854, 467160, 733363, 1155647, 1818594, 2869378, 4524081, 7146483 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Appears to duplicate A129526. - R. J. Mathar, Sep 22 2014

LINKS

Table of n, a(n) for n=1..42.

A. R. Ashrafi, J. Azarija, K. Fathalikhani, S. Klavzar, et al., Orbits of Fibonacci and Lucas cubes, dihedral transformations, and asymmetric strings, 2014.

M. Assis, J. L. Jacobsen, I. Jensen, J.-M. Maillard and B. M. McCoy, Integrability vs non-integrability: Hard hexagons and hard squares compared, arXiv preprint 1406.5566 [math-ph], 2014. See Eq. A.15.

CROSSREFS

Sequence in context: A237800 A232697 A129526 * A000358 A032244 A166588

Adjacent sequences:  A246995 A246996 A246997 * A246999 A247000 A247001

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Sep 18 2014

EXTENSIONS

The initial terms look wrong to me. I have written to the authors.

STATUS

approved

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Last modified March 8 13:25 EST 2021. Contains 341948 sequences. (Running on oeis4.)