|
Search: id:A165384
|
|
|
| A165384 |
|
Number of slanted nX7 (i=1..n)X(j=i..7+i-1) 1..4 arrays with all 1s connected, all 2s connected, all 3s connected, all 4s connected, 1 in the upper left corner, 2 in the upper right corner, 3 in the lower left corner, 4 in the lower right corner, and with no element having more than 3 neighbors with the same value |
|
+0
1
|
|
| 481, 18912, 196082, 1357468, 7051772, 30346872, 113675050, 385459632, 1210822319, 3585582454, 10137294012
(list; graph; listen)
|
|
|
OFFSET
|
2,1
|
|
|
EXAMPLE
|
One solution for n=6
...1.1.2.2.2.2.2..........
.....1.1.2.3.2.2.2........
.......1.3.3.2.3.2.2......
.........3.3.2.3.3.4.4....
...........3.3.3.3.3.4.4..
.............3.4.4.4.4.4.4
|
|
CROSSREFS
|
Sequence in context: A064909 A051980 A020271 this_sequence A165376 A033983 A158329
Adjacent sequences: A165381 A165382 A165383 this_sequence A165385 A165386 A165387
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Ron Hardin (rhhardin(AT)att.net) Sep 17 2009
|
|
|
Search completed in 0.002 seconds
|
