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!)
A188758 Number of nX4 binary arrays without the pattern 0 0 1 vertically or horizontally 1
12, 144, 1112, 8024, 53024, 339927, 2125134, 13128024, 80418708, 490332106, 2980442190, 18082824827, 109579150934, 663532220578, 4015904399274, 24297890544570, 146982319288138, 889004822816985, 5376572830392848 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A188763

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

FORMULA

Empirical: a(n) = 13*a(n-1) -24*a(n-2) -309*a(n-3) +1139*a(n-4) +2904*a(n-5) -15708*a(n-6) -13388*a(n-7) +114908*a(n-8) +27510*a(n-9) -517862*a(n-10) +10696*a(n-11) +1525375*a(n-12) -199987*a(n-13) -2999240*a(n-14) +537335*a(n-15) +3938119*a(n-16) -825688*a(n-17) -3403810*a(n-18) +826898*a(n-19) +1870596*a(n-20) -531896*a(n-21) -607828*a(n-22) +201144*a(n-23) +99904*a(n-24) -37536*a(n-25) -5568*a(n-26) +2304*a(n-27)

EXAMPLE

Some solutions for 3X4

..1..1..0..1....0..1..1..1....0..1..1..1....1..1..1..1....1..1..0..1

..0..1..1..1....1..0..1..0....1..0..1..1....1..1..1..0....0..0..0..0

..0..1..0..1....0..0..0..0....1..1..0..0....0..1..0..0....0..1..0..0

CROSSREFS

Sequence in context: A188769 A206885 A206890 * A207090 A189259 A189612

Adjacent sequences: A188755 A188756 A188757 * A188759 A188760 A188761

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 09 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 February 3 05:52 EST 2023. Contains 360024 sequences. (Running on oeis4.)