OFFSET
1,1
COMMENTS
Table starts
..2....4......7.......11..........16............22..............29
..4...16.....50......131.........301...........625............1198
..7...50....283.....1343........5434.........19188...........60484
.11..131...1343....11971.......90884........592791.........3380440
.16..301...5434....90884.....1330361......16795263.......184000783
.22..625..19188...592791....16795263.....418147052......9062032214
.29.1198..60484..3380440...184000783....9062032214....392636087774
.37.2153.173433.17161921..1773503344..172087530120..14928759496120
.46.3670.459198.78807477.15261176700.2897975481614.502146361367093
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..144
FORMULA
Empirical for column k:
k=1: a(n) = (1/2)*n^2 + (1/2)*n + 1
k=2: [polynomial of degree 6]
k=3: [polynomial of degree 14]
k=4: [polynomial of degree 30]
k=5: [polynomial of degree 62]
EXAMPLE
Some solutions for n=4 k=4
..0..1..0..1....0..0..0..0....0..0..0..0....0..0..0..1....1..0..1..0
..1..1..0..0....0..0..1..1....0..0..1..1....0..0..1..0....1..0..1..0
..0..1..1..1....0..0..0..0....0..1..0..1....0..1..0..1....0..0..1..0
..1..0..0..1....1..0..0..1....0..1..1..1....1..1..1..0....0..1..1..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Jul 19 2013
STATUS
approved