login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A220973 Equals one maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to exactly one of their king-move neighbors in a random 0..1 nX4 array 1
8, 23, 368, 1972, 12033, 79554, 503607, 3213597, 20509600, 131200351, 838727086, 5361102811, 34276632448, 219139964718, 1400992769305, 8956840667851, 57262934303862, 366093267032756, 2340506776827743, 14963323072215607 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A220977

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..23

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A303720 A304414 A305949 * A233470 A334720 A172390

Adjacent sequences:  A220970 A220971 A220972 * A220974 A220975 A220976

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 27 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 21 14:42 EDT 2021. Contains 348155 sequences. (Running on oeis4.)