A196145 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,0,4,1,2 for x=0,1,2,3,4

17, 123, 178, 865, 2781, 7486, 24615, 85533, 266059, 866323, 2817802, 9024682, 29161693, 94823673, 306912929, 992919095, 3216924395, 10417479713, 33734415945, 109304966265, 354134153161, 1147139951832, 3716343382506

Offset

1,1

Comments

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

Column 7 of A196146

Links

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

Example

Some solutions for n=4
.1.0.0.1.1.0.0...1.3.1.0.0.0.1...1.0.0.1.1.0.1
.3.1.1.1.1.1.1...0.1.1.0.0.0.1...3.1.1.3.3.1.1
.1.1.1.0.0.1.1...0.1.1.1.1.1.1...1.1.1.1.1.1.0
.0.0.1.1.1.1.0...1.1.0.1.3.1.0...0.0.0.0.0.1.1

Crossrefs

Sequence in context: A274325 A108682 A031213 * A021003 A196313 A196286

Adjacent sequences: A196142 A196143 A196144 * A196146 A196147 A196148

Keyword

nonn

Author

R. H. Hardin Sep 28 2011

Status

approved