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A025607 Number of n-move rook paths on 8 X 8 board from given corner to same corner. 0
1, 0, 14, 84, 896, 10080, 127904, 1708224, 23426816, 325032960, 4532831744, 63353816064, 886318555136, 12404650352640, 173642248822784, 2430854346031104, 34031138021113856 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..16.

FORMULA

G.f.: [1-18x+58x^2]/[(1+2x)(1-6x)(1-14x)].

MATHEMATICA

CoefficientList[ Series[(1 - 18 x + 58 x^2)/((1 + 2 x) (1 - 6 x) (1 - 14 x)), {x, 0, 16}], x]

CROSSREFS

Sequence in context: A027818 A054149 A273182 * A272103 A244865 A059600

Adjacent sequences:  A025604 A025605 A025606 * A025608 A025609 A025610

KEYWORD

nonn,walk

AUTHOR

David W. Wilson

STATUS

approved

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Last modified February 23 05:58 EST 2019. Contains 320411 sequences. (Running on oeis4.)