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!)
A263706 T(n,k)=Number of (n+2)X(k+2) arrays of permutations of 0..(n+2)*(k+2)-1 with each element moved 0 or 1 knight moves and equal numbers of elements advancing and retreating in the array numbered in row major order. 4
49, 475, 569, 3588, 18995, 4020, 33265, 474101, 437533, 38769, 292865, 14115520, 30745811, 13341380, 355145, 2600010, 452888405, 2977192536, 3002676432, 414860767, 3191484, 23355021, 14143461755 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

......49.......475.......3588......33265....292865.....2600010.23355021

.....569.....18995.....474101...14115520.452888405.14143461755

....4020....437533...30745811.2977192536

...38769..13341380.3002676432

..355145.414860767

.3191484

LINKS

Table of n, a(n) for n=1..23.

EXAMPLE

Some solutions for n=2 k=4

..0..1.13.16.15..5....0..1.15.14.17..5....0..1.10..3..4.16....0..1.10.16..8..5

..6..7..8.20.23.11....6..7.16.13.21.11....6..7..8.13.23.22....6..7..4.17.21.15

.12..2.22..4..3.21...12..9.10..2..3..4...12..9.14..2..5.21...12..2.14.11..3..9

.18.19..9.17.14.10...18.19.20..8.22.23...18.19.20.17.11.15...18.19.20.13.22.23

CROSSREFS

Sequence in context: A250082 A012097 A218594 * A263707 A061621 A337356

Adjacent sequences:  A263703 A263704 A263705 * A263707 A263708 A263709

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Oct 24 2015

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 August 19 20:38 EDT 2022. Contains 356231 sequences. (Running on oeis4.)