OFFSET
1,2
COMMENTS
Column 2 of A212036
FORMULA
Empirical: a(n) = (1/128)*n^8 + (1/32)*n^7 - (53/192)*n^6 - (1/16)*n^5 + (545/128)*n^4 - (1129/96)*n^3 + (913/96)*n^2 + (175/24)*n - 10 for n>1
EXAMPLE
Some solutions for n=4
..0........0........0........0........0........0........0........0
..1.2......0.1......1.2......1.2......1.2......1.2......0.1......1.2
..3.4.5....2.3.4....3.4.4....3.3.0....1.3.4....1.3.4....2.3.4....3.4.5
..6.0.7.6..5.6.2.7..5.6.6.7..4.5.6.7..5.6.7.3..5.6.7.2..5.6.6.7..0.6.7.0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 27 2012
STATUS
approved