OFFSET
1,3
COMMENTS
Column 3 of A279168.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 12*a(n-1) -60*a(n-2) +178*a(n-3) -423*a(n-4) +945*a(n-5) -1762*a(n-6) +2718*a(n-7) -4107*a(n-8) +5541*a(n-9) -6003*a(n-10) +6900*a(n-11) -7369*a(n-12) +5673*a(n-13) -6435*a(n-14) +6357*a(n-15) -3486*a(n-16) +5577*a(n-17) -3953*a(n-18) +453*a(n-19) -3432*a(n-20) +780*a(n-21) +357*a(n-22) +2541*a(n-23) +430*a(n-24) -354*a(n-25) -888*a(n-26) -583*a(n-27) -84*a(n-28) +354*a(n-29) +224*a(n-30) -36*a(n-31) -48*a(n-32) -8*a(n-33) for n>36
EXAMPLE
Some solutions for n=4
..0..1..0. .0..0..1. .0..1..0. .0..1..1. .0..1..1. .0..1..0. .0..1..0
..1..1..0. .1..1..1. .0..1..0. .1..0..0. .0..1..0. .0..0..1. .1..1..1
..1..0..1. .0..0..0. .1..1..1. .1..0..0. .0..1..0. .1..1..1. .0..0..0
..0..0..1. .1..0..1. .0..0..1. .0..1..1. .0..1..1. .0..0..0. .1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 07 2016
STATUS
approved