OFFSET
1,1
COMMENTS
Column 4 of A223305
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 94*a(n-1) -1666*a(n-2) -33696*a(n-3) +1100794*a(n-4) -4373330*a(n-5) -96641317*a(n-6) +770139565*a(n-7) +2078815868*a(n-8) -30815999776*a(n-9) +9439379121*a(n-10) +508827706118*a(n-11) -740346550259*a(n-12) -3820163432470*a(n-13) +8313303065134*a(n-14) +11790417886127*a(n-15) -37600871363022*a(n-16) -5093748767428*a(n-17) +69398396589688*a(n-18) -28648799032000*a(n-19) -44260499027840*a(n-20) +28257350216960*a(n-21) +9517866926336*a(n-22) -7538371685376*a(n-23) -621543923712*a(n-24) +546106392576*a(n-25) for n>26
EXAMPLE
Some solutions for n=3
..1..4..3..7....0..2..5..9....0..1..4..8....1..3..1..4....5..2..5..2
..0..1..4..8....2..5..4..8....2..4..2..5....0..1..4..8....2..1..4..1
..1..3..7..4....5..4..8..9....4..7..4..2....2..4..8..7....4..3..1..4
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 19 2013
STATUS
approved