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!)
A195276 Number of lower triangles of an n X n integer array with each element differing from all of its vertical and horizontal neighbors by 6 or less and triangles differing by a constant counted only once 0
1, 169, 248261, 3249312469, 383752106451389, 411207789366962687359, 4011033701337366560359871745 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 6 of A195278
LINKS
EXAMPLE
Some solutions for n=5
...0...............0...............0...............0...............0
..-6.-1...........-1..3...........-3.-8............3..9...........-2.-7
.-10.-6.-8........-6.-1..3.........1.-5.-8........-1..5..5.........1.-1.-7
.-15-10.-6.-9.....-9.-4.-2.-2......2..1.-2..2......3..7..4..2......1..0.-1..2
.-17-14-12.-9.-8.-10.-8.-4.-2..3...2..4.-1.-4.-6...1..6..4..5..0...5.-1.-7.-2..4
CROSSREFS
Sequence in context: A210087 A135824 A195219 * A013753 A013867 A074666
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 14 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 July 15 07:46 EDT 2024. Contains 374324 sequences. (Running on oeis4.)