OFFSET
1,3
COMMENTS
Column 3 of A282377.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 15*a(n-1) -42*a(n-2) -112*a(n-3) -540*a(n-4) +2619*a(n-5) +10088*a(n-6) +24930*a(n-7) -11745*a(n-8) -121823*a(n-9) -302973*a(n-10) -109557*a(n-11) +626061*a(n-12) +1677252*a(n-13) +1111167*a(n-14) -1607654*a(n-15) -4968711*a(n-16) -3987444*a(n-17) +1869096*a(n-18) +8096727*a(n-19) +7157916*a(n-20) -59475*a(n-21) -6680688*a(n-22) -6454986*a(n-23) -1842524*a(n-24) +1900140*a(n-25) +2314704*a(n-26) +1190024*a(n-27) +304272*a(n-28) +37152*a(n-29) +1728*a(n-30)
EXAMPLE
Some solutions for n=4
..1..1..0. .1..1..0. .0..0..1. .0..1..0. .0..0..0. .0..1..1. .0..1..1
..0..1..1. .1..1..1. .1..1..1. .1..1..0. .0..0..0. .1..1..0. .1..1..1
..0..1..1. .0..1..1. .1..1..1. .1..1..1. .1..1..1. .1..1..0. .0..1..0
..1..0..1. .1..0..0. .1..0..0. .1..0..1. .1..1..1. .0..1..1. .1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 13 2017
STATUS
approved