A283541 Number of nX6 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors.

44, 537, 10069, 167920, 2905717, 49760703, 854841910, 14672363665, 251901309671, 4324419947902, 74239477396709, 1274497943112719, 21879841688275026, 375620233563570591, 6448427921064594633, 110702824503136846908

Offset

1,1

Comments

Column 6 of A283543.

Links

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

Formula

Empirical: a(n) = 15*a(n-1) +58*a(n-2) -419*a(n-3) +549*a(n-4) +9774*a(n-5) -8488*a(n-6) -118308*a(n-7) -78845*a(n-8) +478855*a(n-9) +460388*a(n-10) +780487*a(n-11) -1463834*a(n-12) -3318118*a(n-13) +1351800*a(n-14) +6126749*a(n-15) -1699911*a(n-16) -5411438*a(n-17) -2127087*a(n-18) +2727723*a(n-19) +7791596*a(n-20) -8102395*a(n-21) -4823004*a(n-22) +8249065*a(n-23) +1316588*a(n-24) -3377260*a(n-25) +134761*a(n-26) +308508*a(n-27)

Example

Some solutions for n=4
..1..0..1..0..1..0. .1..0..1..0..1..0. .0..1..0..0..0..0. .0..0..0..0..0..0
..1..0..0..0..1..0. .1..0..1..0..0..0. .1..0..0..0..1..0. .0..1..0..0..1..0
..0..0..0..1..0..0. .0..0..1..0..1..0. .0..0..0..0..1..0. .0..0..0..1..0..0
..0..1..0..1..0..1. .1..0..1..0..1..0. .0..1..1..0..0..0. .0..1..0..1..0..1

Crossrefs

Cf. A283543.

Sequence in context: A272186 A222514 A282645 * A354608 A339852 A202075

Adjacent sequences: A283538 A283539 A283540 * A283542 A283543 A283544

Keyword

nonn

Author

R. H. Hardin, Mar 10 2017

Status

approved