OFFSET
1,1
COMMENTS
Column 3 of A240774
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 37*a(n-1) -470*a(n-2) +2696*a(n-3) -8168*a(n-4) +13440*a(n-5) -3283*a(n-6) -17901*a(n-7) +16963*a(n-8) -662153*a(n-9) +2664795*a(n-10) -3360533*a(n-11) +5535617*a(n-12) -10243067*a(n-13) +6443530*a(n-14) -26560330*a(n-15) +17640820*a(n-16) -2905958*a(n-17) +97439023*a(n-18) +42291829*a(n-19) +35730762*a(n-20) -151787048*a(n-21) -158957051*a(n-22) -133982717*a(n-23) +87202313*a(n-24) +159399645*a(n-25) +153736110*a(n-26) +5561244*a(n-27) -76184253*a(n-28) -59257575*a(n-29) -14782176*a(n-30) +18219168*a(n-31) +9065115*a(n-32) -1423737*a(n-33) -826686*a(n-34) for n>35
EXAMPLE
Some solutions for n=4
..0..1..2....0..1..2....0..1..0....0..1..2....0..1..2....0..1..0....0..1..1
..2..0..1....1..2..3....2..3..2....3..2..0....1..2..3....2..0..3....2..1..1
..1..3..0....0..3..2....3..2..1....2..3..2....0..1..0....1..3..2....0..3..0
..0..1..3....1..2..3....2..3..2....3..1..3....3..0..1....3..1..0....1..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 12 2014
STATUS
approved