A234867 T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with each 3X3 subblock having the sum of its 72 absolute element differences equal to 52, and no adjacent elements equal

2216, 11714, 11714, 61954, 56100, 61954, 326786, 272878, 272878, 326786, 1791552, 1375612, 1241772, 1375612, 1791552, 9897540, 7418922, 6113796, 6113796, 7418922, 9897540, 54119058, 41004436, 33431812, 29472954, 33431812, 41004436, 54119058

Offset

1,1

Comments

Table starts

.......2216......11714......61954.....326786....1791552....9897540....54119058

......11714......56100.....272878....1375612....7418922...41004436...226557788

......61954.....272878....1241772....6113796...33431812..192846644..1129155378

.....326786....1375612....6113796...29472954..161033032..950535104..5625963918

....1791552....7418922...33431812..161033032..896839320.5592546520.34471724096

....9897540...41004436..192846644..950535104.5592546520

...54119058..226557788.1129155378.5625963918

..297874488.1275430856.6882784048

.1655842138.7323656914

.9105854856

Links

R. H. Hardin, Table of n, a(n) for n = 1..60

Formula

Empirical for column k:

k=1: [linear recurrence of order 70] for n>71

Example

Some solutions for n=2 k=4
..0..1..3..0..1..0....0..2..0..3..2..3....0..2..3..1..2..3....0..1..3..1..3..1
..2..0..2..1..3..2....2..0..1..2..1..0....2..3..1..0..3..0....2..3..1..2..0..3
..1..3..0..2..0..3....3..1..3..0..3..1....1..0..3..2..0..2....1..0..3..0..2..0
..0..1..3..0..2..0....0..2..0..3..1..3....0..3..2..1..3..1....0..2..0..1..3..1

Crossrefs

Sequence in context: A337160 A138079 A183831 * A234862 A245949 A223159

Adjacent sequences: A234864 A234865 A234866 * A234868 A234869 A234870

Keyword

nonn,tabl

Author

R. H. Hardin, Jan 01 2014

Status

approved