login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A186441 Number of n-vertex knight's tours on the 8x8 chessboard summed over all choices for the starting position. 2
64, 336, 1672, 8320, 39616, 186544, 847520, 3846192, 16784384, 72946352, 304472976, 1265186112 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
REFERENCES
L. Lant, A method for calculating the Knight's total tour count, Congress. Numerant., 202 (2010), 33-40. [Lant comments that "a(5)=40208 has not yet been verified."]
LINKS
Ron Hardin, Knight's tour A186441, seqfan mailing list Feb 23 2011
EXAMPLE
a(1) = 64, since the knight cannot move.
PROG
(PARI) a(n) = row(n, 6)[6] \\ row(m, n) defined in A186851. - Andrew Howroyd, Jan 02 2023
CROSSREFS
Cf. A001230.
Column 6 of A186851
Sequence in context: A211258 A252080 A017366 * A297642 A061102 A016779
KEYWORD
nonn,fini,more
AUTHOR
N. J. A. Sloane, Feb 21 2011
EXTENSIONS
a(5) to a(8) are tabulated here as computed by R. H. Hardin and D. S. McNeil.
Ambiguous a(0) removed by Max Alekseyev, Sep 22 2013
a(9)-a(12) from Andrew Howroyd, Jan 02 2023
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 23 18:16 EDT 2024. Contains 371916 sequences. (Running on oeis4.)