OFFSET
1,1
COMMENTS
Column 4 of A297085.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 9*a(n-1) +23*a(n-2) +28*a(n-3) -945*a(n-4) -2029*a(n-5) -3142*a(n-6) +21335*a(n-7) +54146*a(n-8) +108209*a(n-9) -59763*a(n-10) -294467*a(n-11) -532677*a(n-12) -529823*a(n-13) +342371*a(n-14) +564802*a(n-15) +462057*a(n-16) -397473*a(n-17) +1756534*a(n-18) +2833349*a(n-19) +926785*a(n-20) +1852731*a(n-21) -2464854*a(n-22) -2170724*a(n-23) +1406946*a(n-24) +1119580*a(n-25) +1245446*a(n-26) +1089190*a(n-27) +612177*a(n-28) +266312*a(n-29) +72636*a(n-30) +29514*a(n-31) +6508*a(n-32) -1104*a(n-33) -288*a(n-34)
EXAMPLE
Some solutions for n=5
..0..0..0..0. .0..1..1..0. .1..0..1..1. .0..1..0..0. .1..1..0..1
..1..0..0..1. .0..0..0..0. .1..0..1..1. .1..0..0..0. .1..1..0..1
..1..0..0..1. .1..1..0..0. .0..0..0..0. .0..0..0..1. .1..1..0..0
..1..1..1..1. .1..1..1..1. .1..1..0..1. .1..0..0..0. .1..1..0..0
..0..1..1..1. .0..0..0..0. .0..0..0..0. .0..0..0..1. .0..0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 25 2017
STATUS
approved