A196328 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 1,3,0,4,2 for x=0,1,2,3,4

13, 209, 1596, 15029, 140502, 1281418, 11937347, 110090749, 1017881679, 9413849312, 87009516622, 804446182456, 7437062770474, 68754061673931, 635629034112919, 5876322569573781, 54326047570786412, 502239418434390677

Offset

1,1

Comments

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

Column 7 of A196329

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for n=4
..0..2..0..2..2..0..2....0..0..0..2..2..0..2....0..0..0..0..0..2..0
..2..2..0..0..0..0..0....2..2..2..0..0..0..0....0..0..0..0..2..2..0
..0..0..0..0..0..0..0....0..0..2..2..2..2..2....0..0..0..2..2..0..0
..0..2..2..0..2..2..0....2..0..0..0..0..0..0....0..0..0..2..0..0..2

Crossrefs

Sequence in context: A319115 A145270 A296671 * A362550 A340431 A251093

Adjacent sequences: A196325 A196326 A196327 * A196329 A196330 A196331

Keyword

nonn

Author

R. H. Hardin Oct 01 2011

Status

approved