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!)
A298963 T(n,k)=Number of nXk 0..1 arrays with every element equal to 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 6
0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 2, 1, 2, 0, 0, 3, 2, 2, 3, 0, 0, 5, 3, 7, 3, 5, 0, 0, 8, 5, 14, 14, 5, 8, 0, 0, 13, 8, 34, 31, 34, 8, 13, 0, 0, 21, 13, 75, 91, 91, 75, 13, 21, 0, 0, 34, 21, 174, 230, 360, 230, 174, 21, 34, 0, 0, 55, 34, 396, 633, 1144, 1144, 633, 396, 34, 55, 0, 0, 89, 55 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,12
COMMENTS
Table starts
.0..0..0...0....0.....0.....0......0.......0........0.........0.........0
.0..1..1...2....3.....5.....8.....13......21.......34........55........89
.0..1..1...2....3.....5.....8.....13......21.......34........55........89
.0..2..2...7...14....34....75....174.....396......907......2070......4734
.0..3..3..14...31....91...230....633....1685.....4552.....12185.....32765
.0..5..5..34...91...360..1144...4062...13794....47972....164529....567553
.0..8..8..75..230..1144..4263..18517...75262...317141...1307739...5446889
.0.13.13.174..633..4062.18517.101720..514070..2720154..14017132..73173545
.0.21.21.396.1685.13794.75262.514070.3172536.20741504.130945779.840773447
LINKS
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1)
k=2: a(n) = a(n-1) +a(n-2)
k=3: a(n) = a(n-1) +a(n-2)
k=4: a(n) = 2*a(n-1) +a(n-3) +2*a(n-4) -2*a(n-5)
k=5: [order 11]
k=6: [order 30]
EXAMPLE
Some solutions for n=5 k=4
..0..0..1..1. .0..0..0..0. .0..0..1..1. .0..0..0..0. .0..0..1..1
..0..0..1..1. .0..0..0..0. .0..0..1..1. .0..0..0..0. .0..0..1..1
..0..0..0..0. .0..0..0..0. .1..1..1..1. .0..0..0..0. .0..0..0..0
..1..1..0..0. .1..1..0..0. .1..1..0..0. .1..1..1..1. .0..0..0..0
..1..1..0..0. .1..1..0..0. .1..1..0..0. .1..1..1..1. .0..0..0..0
CROSSREFS
Columns 2 and 3 are A000045(n-1).
Sequence in context: A298167 A298957 A298902 * A180760 A233270 A241291
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jan 30 2018
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 July 15 19:27 EDT 2024. Contains 374334 sequences. (Running on oeis4.)