OFFSET
1,5
COMMENTS
Table starts
.1.....1.......1.........1...........1..............1................1
.1.....4.......8........24..........82............272..............908
.1.....8......25.......139.........818...........4869............29339
.1....24.....139......1595.......17947.........207116..........2403703
.1....82.....818.....17947......383910........8417922........185389115
.1...272....4869....207116.....8417922......351440611......14724197226
.1...908...29339...2403703...185389115....14724197226....1172824606532
.1..3076..177688..27979008..4094434997...618597002816...93679147557172
.1.10444.1078090.325990496.90512430926.26011056462909.7488807032051960
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..180
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1)
k=2: a(n) = 4*a(n-1) -2*a(n-2) +2*a(n-3) -6*a(n-4) -4*a(n-5) for n>6
k=3: [order 14] for n>16
k=4: [order 38] for n>40
EXAMPLE
Some solutions for n=5 k=4
..0..1..1..0. .0..1..0..1. .0..1..0..1. .0..1..0..1. .0..1..0..0
..1..1..0..1. .0..1..1..0. .1..1..0..0. .0..1..1..0. .1..0..1..1
..0..1..0..1. .1..1..0..1. .0..0..1..0. .1..0..0..1. .0..0..1..1
..1..1..1..0. .1..0..1..1. .1..0..1..0. .1..1..1..0. .1..0..1..1
..0..1..0..1. .1..0..1..0. .1..0..1..0. .0..0..0..1. .1..0..1..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jun 08 2018
STATUS
approved