OFFSET
1,1
COMMENTS
Column 4 of A229372
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-1) +257*a(n-2) +433*a(n-3) -16073*a(n-4) -20963*a(n-5) +481391*a(n-6) +119200*a(n-7) -7182420*a(n-8) +4731824*a(n-9) +44618241*a(n-10) -29900281*a(n-11) -162825007*a(n-12) +45010518*a(n-13) +361117327*a(n-14) +96538808*a(n-15) -378171592*a(n-16) -303446432*a(n-17) +22354064*a(n-18) +83608448*a(n-19) +6923904*a(n-20) -10505152*a(n-21) -433920*a(n-22) +664576*a(n-23) -65536*a(n-24) for n>25
EXAMPLE
Some solutions for n=3
..1..0..1..2....0..2..1..2....1..2..0..2....0..1..0..1....1..2..1..2
..1..0..0..1....0..1..0..1....0..1..2..0....0..1..2..2....2..0..1..0
..2..2..2..1....0..2..1..2....0..2..1..2....2..2..1..0....1..0..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 21 2013
STATUS
approved