OFFSET
1,1
COMMENTS
Column 6 of A250361
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 7*a(n-1) -8*a(n-4) -40*a(n-5) -265*a(n-6) -1800*a(n-7) +38*a(n-8) +336*a(n-9) +1937*a(n-10) +3833*a(n-11) +6318*a(n-12) +303*a(n-13) -1245*a(n-14) -3056*a(n-15) -1258*a(n-16) +725*a(n-17) +1024*a(n-18) +343*a(n-19) +34*a(n-20) -137*a(n-21) -77*a(n-22) +47*a(n-24) +14*a(n-25)
EXAMPLE
Some solutions for n=6
..1....3....5....1....1....1....1....0....4....1....2....4....5....3....2....2
..1....4....2....2....6....7....3....6....7....7....1....6....6....6....5....1
..7....8....7....7....4....3....2....6....3....4....8....8....8....7....7....5
..4....3....4....7....3....5....6....8....8....4....4....7....6....3....4....7
..7....7....7....6....9....7....7....5...10....4....4....4....7....9....5...10
..7....9....5....6....6....8....6....7....8....6....7....5....9....6....7....8
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 19 2014
STATUS
approved