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!)
A184039 T(n,k)=1/16 the number of (n+1)X(k+1) 0..3 arrays with all 2X2 subblocks having the same four values 10
16, 28, 28, 49, 40, 49, 91, 61, 61, 91, 169, 103, 82, 103, 169, 325, 181, 124, 124, 181, 325, 625, 337, 202, 166, 202, 337, 625, 1225, 637, 358, 244, 244, 358, 637, 1225, 2401, 1237, 658, 400, 322, 400, 658, 1237, 2401, 4753, 2413, 1258, 700, 478, 478, 700, 1258 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

...16...28...49...91..169..325..625.1225.2401.4753..9409.18721.37249.74305

...28...40...61..103..181..337..637.1237.2413.4765..9421.18733.37261.74317

...49...61...82..124..202..358..658.1258.2434.4786..9442.18754.37282.74338

...91..103..124..166..244..400..700.1300.2476.4828..9484.18796.37324.74380

..169..181..202..244..322..478..778.1378.2554.4906..9562.18874.37402.74458

..325..337..358..400..478..634..934.1534.2710.5062..9718.19030.37558.74614

..625..637..658..700..778..934.1234.1834.3010.5362.10018.19330.37858.74914

.1225.1237.1258.1300.1378.1534.1834.2434.3610.5962.10618.19930.38458.75514

.2401.2413.2434.2476.2554.2710.3010.3610.4786.7138.11794.21106.39634.76690

.4753.4765.4786.4828.4906.5062.5362.5962.7138.9490.14146.23458.41986.79042

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..287

FORMULA

Empirical, for all rows and columns: a(n)=3*a(n-1)-6*a(n-3)+4*a(n-4)

EXAMPLE

Some solutions for 4X3

..0..3..0....3..2..3....3..2..3....1..0..1....2..3..2....3..2..2....3..1..3

..3..2..3....3..3..3....1..3..1....2..1..2....3..2..3....2..1..3....1..2..1

..3..0..3....3..2..3....3..2..3....0..1..0....2..3..2....3..2..2....3..1..3

..2..3..2....3..3..3....1..3..1....1..2..1....2..3..2....2..1..3....2..1..2

CROSSREFS

Sequence in context: A300132 A101857 A350302 * A212051 A166595 A280989

Adjacent sequences: A184036 A184037 A184038 * A184040 A184041 A184042

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Jan 08 2011

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 January 30 19:10 EST 2023. Contains 359947 sequences. (Running on oeis4.)