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!)
A237904 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 6
256, 1768, 1768, 12441, 21410, 12441, 88964, 265306, 265306, 88964, 636720, 3351086, 5825366, 3351086, 636720, 4539422, 42195634, 130240640, 130240640, 42195634, 4539422, 32392585, 529992314, 2894506130, 5180304200, 2894506130 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
.........256..........1768..........12441...........88964..........636720
........1768.........21410.........265306.........3351086........42195634
.......12441........265306........5825366.......130240640......2894506130
.......88964.......3351086......130240640......5180304200....204201919828
......636720......42195634.....2894506130....204201919828..14245150393666
.....4539422.....529992314....64281925312...8050312460472.994081770428554
....32392585....6659762642..1428716811643.317615484901450
...231168380...83778337524.31771479675504
..1651386880.1053822365410
.11781707484
LINKS
FORMULA
Empirical for column k:
k=1: [linear recurrence of order 40] for n>41
EXAMPLE
Some solutions for n=2 k=4
..0..0..2..3..0....0..0..0..2..0....0..0..0..1..0....0..0..3..0..2
..1..2..1..3..2....3..1..2..1..1....3..3..2..2..1....3..1..2..3..2
..2..3..0..0..1....3..1..3..3..0....1..3..2..1..1....1..1..3..1..2
CROSSREFS
Sequence in context: A238049 A237785 A237780 * A237899 A238311 A205944
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 15 2014
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 16 20:04 EDT 2024. Contains 371754 sequences. (Running on oeis4.)