A299878 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

64, 353, 632, 6542, 53159, 324797, 2714797, 21236116, 164681059, 1324743079, 10484425460, 83863545724, 672893105104, 5372830130506, 43082335143433, 345656025983818, 2769212623103764, 22208496535336149, 178160302556262981

Offset

1,1

Comments

Column 7 of A299879.

Links

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

Example

Some solutions for n=5
..0..1..0..0..1..0..1. .0..0..0..1..0..0..0. .0..1..0..1..1..0..1
..0..1..0..1..1..0..0. .1..0..0..0..0..0..1. .0..1..0..1..0..0..1
..1..1..1..1..1..1..1. .0..1..1..1..1..1..0. .1..0..0..0..0..0..1
..1..1..0..0..0..0..1. .0..1..1..0..1..1..0. .1..0..1..1..1..0..1
..0..1..0..1..0..0..0. .0..1..0..0..1..0..1. .0..1..0..0..0..1..0

Crossrefs

Cf. A299879.

Sequence in context: A298220 A299349 A299096 * A299014 A299805 A299681

Adjacent sequences: A299875 A299876 A299877 * A299879 A299880 A299881

Keyword

nonn

Author

R. H. Hardin, Feb 21 2018

Status

approved