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

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A209543 T(n,k)=Number of nXk array permutations with every element making zero or one right-handed knight moves (out 2, right 1) 7
 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 4, 16, 4, 1, 1, 8, 72, 72, 8, 1, 1, 16, 243, 729, 243, 16, 1, 1, 32, 1125, 6480, 6480, 1125, 32, 1, 1, 64, 5000, 63504, 103680, 63504, 5000, 64, 1, 1, 128, 20480, 635040, 2080800, 2080800, 635040, 20480, 128, 1, 1, 256, 86528, 6350400 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,8 COMMENTS Table starts .1..1.....1.......1.........1............1..............1................1 .1..1.....2.......4.........8...........16.............32...............64 .1..2....16......72.......243.........1125...........5000............20480 .1..4....72.....729......6480........63504.........635040..........6350400 .1..8...243....6480....103680......2080800.......42166080........833285376 .1.16..1125...63504...2080800.....92160000.....4045204800.....171889843216 .1.32..5000..635040..42166080...4045204800...366400000000...33556714023168 .1.64.20480.6350400.833285376.171889843216.33556714023168.6638067426640896 LINKS R. H. Hardin, Table of n, a(n) for n = 1..143 EXAMPLE Some solutions for n=4 k=4 ..6..8..2.10....6..1..2..3....6..7..2..3....0..8..2..3....6..7..2..3 ..4.12..0..7...10.12..0.14....4..5..0..1....4..5.13..7....4.12..0..1 ..1.15..3.11....8..9..4.11...14..9.10.11....1..9.10.11....8..9.10.11 ..5.13.14..9....5.13..7.15...12.13..8.15...12..6.14.15....5.13.14.15 CROSSREFS Sequence in context: A152937 A331315 A064552 * A178655 A337278 A178304 Adjacent sequences: A209540 A209541 A209542 * A209544 A209545 A209546 KEYWORD nonn,tabl AUTHOR R. H. Hardin Mar 10 2012 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.

Last modified November 27 06:50 EST 2022. Contains 358362 sequences. (Running on oeis4.)