OFFSET
1,2
COMMENTS
Table starts
..1....2.....3.......4........6..........9...........13............19
..2....5....11......24.......55........123..........276...........621
..3...11....34.....116......391.......1304.........4374.........14645
..4...24...116.....598.....3035......15352........78434........399324
..6...55...391....3035....23315.....179499......1385901......10668635
..9..123..1304...15352...179499....2094347.....24486926.....286066769
.13..276..4374...78434..1385901...24486926....434357928....7703929911
.19..621.14645..399324.10668635..286066769...7703929911..207301696580
.28.1395.49051.2032606.82245065.3346911102.136731507572.5581805664324
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..241
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1) +a(n-3)
k=2: a(n) = a(n-1) +2*a(n-2) +2*a(n-3) -a(n-5)
k=3: [order 17]
k=4: [order 45]
EXAMPLE
Some solutions for n=5 k=4
..1..1..1..0. .1..0..0..1. .0..0..0..0. .0..0..0..0. .1..0..0..0
..0..1..0..1. .1..0..0..1. .0..0..1..1. .0..0..1..1. .1..0..0..0
..0..0..0..1. .0..0..0..0. .0..0..0..0. .0..1..0..0. .0..0..0..0
..1..0..0..0. .0..0..0..0. .0..1..0..0. .1..1..1..0. .1..0..1..0
..1..0..1..1. .1..1..0..0. .1..1..1..0. .0..1..0..0. .1..0..1..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Nov 23 2017
STATUS
approved