A197078 - OEIS

A197078

Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,1,2,4,0 for x=0,1,2,3,4

13, 487, 13286, 445506, 14895018, 513380599, 17446576240, 592290047724, 20128502440024, 683993118482402, 23243767206546673, 789980959730204326, 26850332922315114822, 912620325896540690864, 31019623434344238447439

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Every 0 is next to 0 3's, every 1 is next to 1 1's, every 2 is next to 2 2's, every 3 is next to 3 4's, every 4 is next to 4 0's

Column 7 of A197079

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..117

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A033983 A055412 A196911 * A116114 A281181 A183479

Adjacent sequences: A197075 A197076 A197077 * A197079 A197080 A197081

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 09 2011

STATUS

approved