OFFSET
1,1
COMMENTS
Column 5 of A260980
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 12*a(n-4) +4*a(n-5) +4*a(n-7) -15*a(n-8) -32*a(n-9) -3*a(n-10) -34*a(n-11) +a(n-12) +16*a(n-13) +8*a(n-14) +28*a(n-15) -51*a(n-16) +40*a(n-17) +16*a(n-18) -36*a(n-19) +33*a(n-20) +224*a(n-21) -4*a(n-23) +64*a(n-24) +128*a(n-25) -24*a(n-27) +64*a(n-28) for n>34
EXAMPLE
Some solutions for n=4
..1..0..0..1..0..0..0....0..0..0..0..0..0..0....1..0..0..0..1..0..0
..0..0..0..0..0..1..0....0..1..0..0..0..0..1....0..0..0..1..0..0..0
..0..0..0..0..1..0..0....1..0..0..1..0..0..0....0..1..0..0..0..1..0
..0..1..0..0..0..0..1....0..0..1..0..0..0..0....1..0..0..0..1..0..0
..1..0..0..1..0..0..0....0..0..0..0..1..0..0....0..0..1..0..0..0..1
..0..0..1..0..0..1..0....0..1..0..1..0..0..1....0..1..0..0..0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Aug 06 2015
STATUS
approved