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A305011 Number of nX4 0..1 arrays with every element unequal to 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero. 1
2, 10, 31, 42, 255, 862, 2200, 8807, 33055, 106158, 385363, 1430563, 4984613, 17903390, 65557446, 234669342, 845691032, 3078003683, 11115610686, 40193431243, 145975752428, 528747707176, 1915566040755, 6952384042215 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A305015.

LINKS

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

R. H. Hardin, Empirical recurrence of order 69

FORMULA

Empirical recurrence of order 69 (see link above)

EXAMPLE

Some solutions for n=5

..0..1..0..0. .0..0..0..1. .0..0..0..1. .0..1..0..1. .0..0..1..1

..0..0..0..1. .0..1..1..1. .1..0..0..1. .0..0..1..1. .0..1..0..1

..0..0..0..0. .0..0..0..1. .0..0..0..0. .1..0..1..0. .0..1..1..1

..1..0..0..1. .0..0..0..1. .1..0..0..1. .0..1..0..1. .0..0..1..1

..0..0..0..0. .0..1..1..1. .0..0..0..1. .0..0..1..1. .0..1..0..1

CROSSREFS

Cf. A305015.

Sequence in context: A281069 A156492 A297467 * A090809 A051747 A193008

Adjacent sequences:  A305008 A305009 A305010 * A305012 A305013 A305014

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 23 2018

STATUS

approved

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Last modified August 5 14:29 EDT 2021. Contains 346469 sequences. (Running on oeis4.)