login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A278192
Number of 5Xn 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.
1
0, 1532, 347116, 91270219, 23124026160, 5858713218010, 1482450100931615, 375049865320978231, 94879541460515598902, 24002203229663363493985, 6071950545418789283104046, 1536048854453696521513657702
OFFSET
1,2
COMMENTS
Row 5 of A278188.
LINKS
EXAMPLE
Some solutions for n=2
..0..1. .0..3. .0..3. .0..1. .0..3. .0..2. .0..3. .0..2. .0..1. .0..1
..3..2. .1..0. .1..2. .0..2. .1..2. .1..3. .1..3. .1..3. .3..2. .3..2
..1..0. .2..3. .1..0. .0..3. .3..1. .0..3. .2..2. .1..2. .2..1. .2..0
..3..0. .1..1. .1..3. .1..2. .0..0. .3..1. .3..1. .1..3. .0..2. .3..1
..2..3. .3..0. .2..0. .0..0. .2..3. .1..2. .0..2. .2..0. .3..3. .0..3
CROSSREFS
Cf. A278188.
Sequence in context: A355963 A306850 A296781 * A248689 A145982 A251891
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 14 2016
STATUS
approved