OFFSET
0,2
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..1000
EXAMPLE
a(3) = 7:
._____. ._____. ._____. ._____. ._____. ._____. ._____.
| | | | | | |_____| |_____| |_____| | | | | |_|_|_|
| | | | | | |_____| |_____| | | | | | | | | |_|_|_|
| | | | | | |_____| | | | | | | | | |_|_|_| |_|_|_|
| | | | | | |_____| | | | | |_|_|_| |_____| |_|_|_|
|_____| |_|_|_| |_____| |_|_|_| |_____| |_____| |_|_|_|
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Dec 19 2012
STATUS
approved