OFFSET
1,1
COMMENTS
Column 5 of A279902.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-1) +16*a(n-2) -56*a(n-3) -146*a(n-4) +316*a(n-5) +814*a(n-6) -868*a(n-7) -2325*a(n-8) +1214*a(n-9) +2214*a(n-10) -1932*a(n-11) +3703*a(n-12) +4994*a(n-13) -12996*a(n-14) -3398*a(n-15) +12908*a(n-16) -8904*a(n-17) +2591*a(n-18) +12692*a(n-19) -11884*a(n-20) -3456*a(n-21) +4880*a(n-22) +192*a(n-23) -576*a(n-24) for n>27
EXAMPLE
Some solutions for n=4
..0..1..2..2..2. .0..1..1..1..1. .0..0..0..0..0. .0..0..0..0..0
..0..0..2..2..2. .0..0..1..1..1. .1..0..0..0..0. .0..0..1..0..0
..0..0..0..2..2. .0..0..1..1..1. .2..2..2..2..2. .1..1..1..1..1
..0..0..0..2..2. .0..0..1..1..1. .2..2..2..2..2. .1..1..1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 22 2016
STATUS
approved