login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A316637 Number of nX4 0..1 arrays with every element unequal to 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero. 1
2, 45, 122, 524, 2342, 9773, 44095, 195387, 864584, 3862519, 17173279, 76452466, 340685629, 1516751816, 6755834593, 30091122083, 134013352168, 596898766434, 2658516219943, 11840669606842, 52737482373121, 234886906246219 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A316641.

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

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

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

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

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

CROSSREFS

Cf. A316641.

Sequence in context: A279680 A305363 A304955 * A281661 A019579 A302220

Adjacent sequences:  A316634 A316635 A316636 * A316638 A316639 A316640

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 09 2018

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 19 09:56 EST 2022. Contains 350464 sequences. (Running on oeis4.)