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!)
A198601 Number of 2nX10 0..3 arrays with values 0..3 introduced in row major order and each element equal to exactly two horizontal and vertical neighbors 1
14, 1985, 309770, 49726877, 8055413256, 1308245895665, 212660032469362, 34578446232234461, 5622954055105266638, 914399588312051428232, 148700162991801408836106, 24181772212240990503470021 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A198604

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..16

EXAMPLE

Some solutions for n=3

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

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

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

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

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

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

CROSSREFS

Sequence in context: A060614 A160305 A279804 * A233076 A134814 A258487

Adjacent sequences:  A198598 A198599 A198600 * A198602 A198603 A198604

KEYWORD

nonn

AUTHOR

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 12 10:20 EDT 2020. Contains 335657 sequences. (Running on oeis4.)