A233681 Number of (n+1)X(7+1) 0..3 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 6

116872, 3145968, 81243904, 3057995568, 95799636288, 3879764059776, 127711201373696, 5205568118816384, 174889319781646592, 7078287652666770944, 240929096530590043904, 9661566569156043828736, 332270905126450553744128

Offset

1,1

Comments

Column 7 of A233682

Links

R. H. Hardin, Table of n, a(n) for n = 1..111

Example

Some solutions for n=1
..1..2..1..2..1..1..3..1....2..3..3..1..2..1..3..1....0..1..2..2..2..1..1..1
..3..2..0..0..0..2..2..1....2..1..2..1..3..1..2..2....2..1..3..1..0..0..2..3

Crossrefs

Sequence in context: A046407 A156417 A156865 * A246557 A289911 A206204

Adjacent sequences: A233678 A233679 A233680 * A233682 A233683 A233684

Keyword

nonn

Author

R. H. Hardin, Dec 14 2013

Status

approved