OFFSET
1,1
COMMENTS
Column 4 of A279977.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 30*a(n-1) -399*a(n-2) +3163*a(n-3) -17061*a(n-4) +67920*a(n-5) -210660*a(n-6) +527724*a(n-7) -1093560*a(n-8) +1904479*a(n-9) -2816082*a(n-10) +3556545*a(n-11) -3846177*a(n-12) +3560349*a(n-13) -2812614*a(n-14) +1885732*a(n-15) -1064382*a(n-16) +500283*a(n-17) -192971*a(n-18) +59883*a(n-19) -14538*a(n-20) +2649*a(n-21) -339*a(n-22) +27*a(n-23) -a(n-24)
EXAMPLE
Some solutions for n=4
..0..1..0..1. .0..1..1..0. .0..1..1..0. .0..1..1..0. .0..1..0..0
..1..1..0..1. .0..0..1..1. .1..0..1..0. .0..0..1..0. .0..1..1..1
..1..0..1..1. .0..0..0..1. .1..0..0..1. .0..1..1..0. .0..0..1..0
..0..1..0..1. .0..1..0..1. .0..1..0..0. .1..0..0..1. .1..1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 24 2016
STATUS
approved