OFFSET
1,1
COMMENTS
Column 2 of A235413
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-1) +15*a(n-2) -78*a(n-3) -84*a(n-4) +696*a(n-5) +112*a(n-6) -3760*a(n-7) +1218*a(n-8) +13704*a(n-9) -8862*a(n-10) -35508*a(n-11) +32060*a(n-12) +67024*a(n-13) -76668*a(n-14) -92568*a(n-15) +131079*a(n-16) +91860*a(n-17) -164969*a(n-18) -61582*a(n-19) +153888*a(n-20) +22296*a(n-21) -105420*a(n-22) +2424*a(n-23) +51632*a(n-24) -7808*a(n-25) -17136*a(n-26) +4320*a(n-27) +3456*a(n-28) -1152*a(n-29) -320*a(n-30) +128*a(n-31)
EXAMPLE
Some solutions for n=4
..0..0..0....1..0..0....0..1..0....1..0..0....1..0..1....1..0..1....0..0..1
..1..0..0....0..0..1....1..0..1....1..0..0....1..1..0....0..1..0....1..0..0
..0..1..0....1..1..0....0..1..0....1..1..0....0..1..0....0..1..0....1..0..1
..1..1..0....1..0..0....1..1..0....0..1..0....1..1..0....1..1..0....1..1..0
..1..1..0....1..1..0....1..1..0....1..1..1....0..1..0....1..0..1....1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 10 2014
STATUS
approved