OFFSET
1,2
COMMENTS
Table starts
.....1.......3........9.........27...........81............243..............729
.....3......13.......55........237.........1011...........4341............18567
.....9......55......322.......1953........11619..........70044...........418925
....27.....237.....1953......16953.......143191........1232595.........10494847
....81....1011....11619.....143191......1701473.......20745787........249227639
...243....4341....70044....1232595.....20745787......360549804.......6153770375
...729...18567...418925...10494847....249227639.....6153770375.....148654946039
..2187...79605..2518389...89998565...3023598287...106324742825....3645190453457
..6561..340803.15091626..768481445..36466869997..1823862776230...88602958444787
.19683.1460349.90619253.6579905737.441485256003.31435034643715.2166253373649057
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..143
EXAMPLE
Some solutions with upper left block zero for 4X3
..0..0..1....0..0..0....0..0..0....0..0..1....0..0..0....0..0..1....0..0..1
..0..0..1....0..0..1....0..0..1....0..0..0....0..0..1....0..0..1....0..0..1
..0..1..0....1..1..1....1..1..0....0..1..1....1..0..1....1..0..0....1..0..0
..1..1..0....0..1..1....0..1..0....1..1..0....0..1..1....1..1..0....1..1..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Jan 07 2011
STATUS
approved