The On-Line Encyclopedia of Integer Sequences (OEIS)

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A197363

Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,1,1,1 for x=0,1,2,3,4
(history; published version)

#5 by Russ Cox at Sat Mar 31 12:36:29 EDT 2012

AUTHOR

_R. H. Hardin (rhhardin(AT)att.net) _ Oct 14 2011

Discussion

Sat Mar 31

12:36

OEIS Server: https://oeis.org/edit/global/875

#4 by Ron Hardin at Fri Oct 14 06:27:07 EDT 2011

STATUS

editing

approved

#3 by Ron Hardin at Fri Oct 14 06:27:03 EDT 2011

LINKS

R. H. Hardin, <a href="/A197363/b197363.txt">Table of n, a(n) for n = 1..71</a>

#2 by Ron Hardin at Fri Oct 14 06:26:39 EDT 2011

NAME

allocated Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,1,1,1 for Ron Hardinx=0,1,2,3,4

DATA

1, 249, 10317, 300943, 13639968, 564930689, 22225081365, 916121380455, 37586117262267, 1524500056348640, 62133636167189064, 2537563935267330621, 103445371582832062080, 4215904817820876539413, 171923620467459691011031

OFFSET

1,2

COMMENTS

Every 0 is next to 0 4's, every 1 is next to 1 3's, every 2 is next to 2 1's, every 3 is next to 3 1's, every 4 is next to 4 1's

Column 7 of A197364

EXAMPLE

Some solutions containing all values 0 to 4 for n=4

..2..1..0..2..1..3..1....0..0..1..3..1..0..0....1..3..1..0..0..0..1

..1..3..0..1..4..1..2....2..1..1..1..4..1..2....2..1..2..0..0..1..3

..0..1..1..3..1..1..2....1..3..3..1..1..3..1....0..1..2..2..1..4..1

..0..0..0..0..1..3..1....2..1..1..2..0..0..0....1..3..1..1..3..1..2

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Oct 14 2011

STATUS

approved

editing

#1 by Ron Hardin at Fri Oct 14 06:18:53 EDT 2011

NAME

allocated for Ron Hardin

KEYWORD

allocated

STATUS

approved