OFFSET
1,1
COMMENTS
Table starts
..25..37..51..63..105..153..189..315..459..567..945.1377.1701..2835..4131..5103
..37..50..83..91..133..223..243..357..595..653..959.1589.1761..2583..4253..4765
..51..83.133.120..219..350..302..531..846..754.1323.2100.1888..3287..5198..4734
..63..91.120.155..230..296..369..546..712..893.1322.1722.2155..3190..4158..5203
.105.133.219.230..327..537..554..753.1193.1250.1721.2747.2894..3987..6343..6694
.153.223.350.296..537..864..720.1256.1912.1592.2688.4096.3520..5968..9136..7904
.189.243.302.369..554..720..920.1312.1616.1976.2784.3472.4272..6096..7664..9464
.315.357.531.546..753.1256.1312.1832.2936.2976.3896.5984.6128..8128.12616.13056
.459.595.846.712.1193.1912.1616.2936.4672.3840.6544.9696.7904.13008.19264.16192
.567.653.754.893.1250.1592.1976.2976.3840.4880.6816.8192.9904.13536.16384.19888
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..1624
FORMULA
Empirical for column k:
k=1: a(n) = 3*a(n-3) for n>5
k=2: a(n) = 6*a(n-3) -10*a(n-6) +3*a(n-9) for n>11
k=3: a(n) = 5*a(n-3) -6*a(n-6) -a(n-9) +a(n-12) for n>15
k=4: a(n) = 3*a(n-3) -a(n-6) -a(n-9) for n>12
k=5: a(n) = 5*a(n-3) -6*a(n-6) -2*a(n-9) +2*a(n-12) +3*a(n-15) +a(n-18) for n>22
k=6: a(n) = 5*a(n-3) -7*a(n-6) +2*a(n-9) -2*a(n-12) +3*a(n-15) +a(n-18) +a(n-21) for n>27
k=7: a(n) = 3*a(n-3) -a(n-6) -a(n-9) -a(n-12) -a(n-15) for n>20
EXAMPLE
Some solutions for n=4 k=4
..0..1..2..0..1..3....0..1..2..0..3..2....0..0..0..0..0..0....0..0..0..0..0..0
..0..0..0..0..0..0....2..2..2..2..2..2....1..2..0..1..3..0....1..0..2..1..0..2
..0..2..1..0..2..1....1..0..2..1..0..2....2..1..0..3..1..0....3..0..1..2..0..1
..0..1..2..0..1..2....0..1..2..0..1..2....0..0..0..0..0..0....0..0..0..0..0..0
..0..0..0..0..0..0....2..2..2..2..2..2....1..3..0..1..2..0....1..0..3..1..0..2
..0..2..1..0..2..3....3..0..2..1..0..2....3..1..0..2..1..0....3..0..1..3..0..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 26 2014
STATUS
approved