OFFSET
1,1
COMMENTS
Table starts
..3....6......10.........15............21...............28.................36
..6...22......63........154...........336..............672...............1254
.10...63.....322.......1439..........5767............20972..............69834
.15..154....1439......12958........110455...........870473............6275546
.21..336....5767.....110455.......2179956.........41299256..........725674326
.28..672...20972.....870473......41299256.......1976588468........89730161098
.36.1254...69834....6275546.....725674326......89730161098.....10811999412826
.45.2211..214774...41370842...11698232451....3776527762052...1224101415304069
.55.3718..615120..250517485..172994405326..146582077597322.128795068372302728
.66.6006.1653047.1402100369.2356249442222.5255148833158068
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..127
FORMULA
Empirical for column k:
k=1: a(n) = (1/2)*n^2 + (3/2)*n + 1
k=2: [polynomial of degree 6]
k=3: [polynomial of degree 16]
k=4: [polynomial of degree 44]
EXAMPLE
Some solutions for n=4 k=4
..1..0..0..0. .1..0..0..0. .1..1..1..0. .1..1..0..0. .1..1..0..0
..1..1..1..0. .1..1..1..0. .2..0..0..2. .2..1..2..2. .2..1..2..2
..1..2..1..0. .1..2..0..1. .2..1..0..0. .2..2..1..1. .2..2..1..0
..2..0..1..2. .1..2..0..1. .2..1..0..2. .2..2..2..2. .2..2..1..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Nov 28 2016
STATUS
approved