A300608 Number of nX4 0..1 arrays with every element equal to 1, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

2, 30, 277, 2347, 19532, 164619, 1387896, 11697909, 98591087, 830954473, 7003554684, 59028229212, 497509382092, 4193173792143, 35341458756838, 297869535158874, 2510543242339775, 21159691214336637, 178340896550028412

Offset

1,1

Comments

Column 4 of A300612.

Links

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

R. H. Hardin, Empirical recurrence of order 72

Formula

Empirical recurrence of order 72 (see link above)

Example

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

Crossrefs

Cf. A300612.

Sequence in context: A368498 A300423 A300685 * A301350 A036351 A189770

Adjacent sequences: A300605 A300606 A300607 * A300609 A300610 A300611

Keyword

nonn

Author

R. H. Hardin, Mar 09 2018

Status

approved