OFFSET
1,1
COMMENTS
Column 7 of A301823.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 30*a(n-1) -418*a(n-2) +3654*a(n-3) -22669*a(n-4) +106606*a(n-5) -395403*a(n-6) +1186422*a(n-7) -2928707*a(n-8) +6014938*a(n-9) -10354804*a(n-10) +15013356*a(n-11) -18384098*a(n-12) +19034892*a(n-13) -16660310*a(n-14) +12301356*a(n-15) -7624215*a(n-16) +3923202*a(n-17) -1635354*a(n-18) +519982*a(n-19) -103769*a(n-20) -2026*a(n-21) +11017*a(n-22) -4610*a(n-23) +1059*a(n-24) -138*a(n-25) +8*a(n-26) for n>28
EXAMPLE
Some solutions for n=5
..0..0..0..1..1..0..0. .0..0..1..1..1..1..0. .0..0..1..1..0..0..0
..1..1..0..1..0..1..1. .0..1..0..0..1..0..0. .0..0..1..0..1..0..0
..1..0..1..1..0..1..0. .1..1..0..1..1..1..0. .0..0..0..1..1..0..0
..0..0..1..0..1..0..0. .1..0..0..0..1..0..1. .1..1..0..0..1..1..1
..1..1..0..0..1..1..1. .1..1..1..0..0..1..1. .1..1..1..0..0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 27 2018
STATUS
approved