OFFSET
1,1
COMMENTS
Column 6 of A223352
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 105*a(n-1) -1690*a(n-2) -12608*a(n-3) +372616*a(n-4) -412320*a(n-5) -25492864*a(n-6) +95198976*a(n-7) +669344256*a(n-8) -3814535168*a(n-9) -4806082560*a(n-10) +56384290816*a(n-11) -49291067392*a(n-12) -244915896320*a(n-13) +525445627904*a(n-14) -268301238272*a(n-15) -40399536128*a(n-16) +53687091200*a(n-17) -8589934592*a(n-18)
EXAMPLE
Some solutions for n=3
..3..1..0..2..4..2....0..1..0..2..4..1....0..1..0..2..0..1....3..1..0..1..4..1
..1..0..1..4..2..4....2..0..1..0..2..0....1..4..1..4..1..4....1..4..1..3..1..3
..3..1..3..1..0..2....0..2..4..2..5..2....0..1..4..2..4..1....0..1..0..1..3..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 19 2013
STATUS
approved