A298392 Number of nX4 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

2, 13, 29, 112, 432, 1915, 7556, 29657, 123601, 506005, 2045992, 8338063, 34081117, 138882034, 565662142, 2306767356, 9406512939, 38341596638, 156298964930, 637236157303, 2597868552855, 10590565910150, 43175175465961

Offset

1,1

Comments

Column 4 of A298396.

Links

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

R. H. Hardin, Empirical recurrence of order 68

Formula

Empirical recurrence of order 68 (see link above)

Example

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

Crossrefs

Cf. A298396.

Sequence in context: A141336 A253970 A361836 * A299510 A299310 A300111

Adjacent sequences: A298389 A298390 A298391 * A298393 A298394 A298395

Keyword

nonn

Author

R. H. Hardin, Jan 18 2018

Status

approved