A278191 Number of 4Xn 0..3 arrays with every element plus 1 mod 4 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.

0, 200, 13720, 1075258, 81691958, 6196345742, 469577175712, 35577034730206, 2695338849906758, 204197662339944373, 15469874074262345128, 1171986102689397728682, 88788773705648773915186

Offset

1,2

Comments

Row 4 of A278188.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Cf. A278188.

Sequence in context: A221039 A221502 A232132 * A248453 A035835 A027825

Adjacent sequences: A278188 A278189 A278190 * A278192 A278193 A278194

Keyword

nonn

Author

R. H. Hardin, Nov 14 2016

Status

approved