OFFSET
1,2
COMMENTS
Table starts
.1....2........2............3................3..................4
.2....7.......21...........56..............130................281
.2...21......181.........1341.............8312..............44300
.3...56.....1341........29363...........537572............8249505
.3..130.....8312.......537572.........29859761.........1387552127
.4..281....44300......8249505.......1387552127.......197324899476
.4..555...207562....108479344......54711391946.....23770010642604
.5.1034...872998...1248911674....1867753201968...2467219447235558
.5.1827..3348194..12812139620...56202066220732.224555987749683857
.6.3090.11857834.118772002152.1512619583145180
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..112
EXAMPLE
Some solutions for n=2 k=7
.-1..0..0..0..0..1..1...-1.-1.-1..0..1..1..1...-1.-1..0..0..0..0..1
..0.-1.-1.-1..0..1..1....0..0..1..0.-1..0..0....0..1.-1..0..0..0..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Dec 09 2011
STATUS
approved