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!)
A218067 Number of 4Xn arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random 0..1 4Xn array 1
16, 42, 308, 1664, 10246, 60804, 368220, 2217012, 13380802, 80716652, 487004728, 2938281242, 17727888682, 106960361186, 645338542928, 3893618011484, 23491925716860, 141737303076720, 855164357481732, 5159588643396442 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A218064

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..70

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A318340 A318072 A304954 * A187729 A088800 A316636

Adjacent sequences:  A218064 A218065 A218066 * A218068 A218069 A218070

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 19 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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 22 14:14 EDT 2022. Contains 353953 sequences. (Running on oeis4.)