OFFSET
1,1
COMMENTS
Column 5 of A260070
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 9*a(n-3) +49*a(n-4) -26*a(n-6) -312*a(n-7) -842*a(n-8) +38*a(n-9) +686*a(n-10) +3449*a(n-11) +7088*a(n-12) -830*a(n-13) -4844*a(n-14) -18040*a(n-15) -33155*a(n-16) +4232*a(n-17) +15646*a(n-18) +52245*a(n-19) +87752*a(n-20) -11520*a(n-21) -29970*a(n-22) -84645*a(n-23) -128641*a(n-24) +19022*a(n-25) +46762*a(n-26) +79957*a(n-27) +90454*a(n-28) -16484*a(n-29) -46682*a(n-30) -50717*a(n-31) -18348*a(n-32) +6652*a(n-33) +19384*a(n-34) +15200*a(n-35) +3168*a(n-36) -192*a(n-37) -1280*a(n-38) -2816*a(n-39) for n>43
EXAMPLE
Some solutions for n=4
..0..0..0..0..0..0..0....0..1..0..0..0..0..0....0..0..0..0..1..0..0
..1..0..0..1..1..0..0....0..0..0..0..1..1..0....1..1..0..0..1..0..0
..0..0..0..1..1..0..0....0..0..0..0..1..1..0....0..0..0..0..0..0..0
..0..0..0..0..0..0..0....0..1..0..0..0..0..0....0..0..0..0..0..0..0
..1..0..0..0..0..0..0....0..1..0..0..0..0..0....0..1..1..0..0..1..1
..0..0..0..1..1..1..1....0..0..0..0..1..1..1....0..1..1..0..0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 14 2015
STATUS
approved