login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A302524 Number of nX4 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 2
2, 10, 42, 168, 902, 3256, 15852, 77904, 314276, 1506894, 7035934, 30537794, 143024948, 655833426, 2937151450, 13568476862, 61920768478, 280707441628, 1287994621032, 5873565899442, 26746065104754, 122342967545180 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A302528.

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

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

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

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

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

CROSSREFS

Cf. A302528.

Sequence in context: A181052 A024483 A276666 * A084180 A020988 A177238

Adjacent sequences:  A302521 A302522 A302523 * A302525 A302526 A302527

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 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 June 16 06:46 EDT 2019. Contains 324145 sequences. (Running on oeis4.)