OFFSET
1,1
COMMENTS
Column 5 of A259952
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-1) +6*a(n-2) +34*a(n-3) +158*a(n-4) -200*a(n-5) -398*a(n-6) -1320*a(n-7) -3859*a(n-8) +3564*a(n-9) +2523*a(n-10) +19633*a(n-11) +42806*a(n-12) -31390*a(n-13) +29533*a(n-14) -124801*a(n-15) -218738*a(n-16) +123198*a(n-17) -271189*a(n-18) +415853*a(n-19) +378986*a(n-20) -99555*a(n-21) +570496*a(n-22) -648015*a(n-23) -174016*a(n-24) -112063*a(n-25) -299779*a(n-26) +320037*a(n-27) +86070*a(n-28) +22830*a(n-29) +30933*a(n-30) -80837*a(n-31) -26621*a(n-32) +14225*a(n-33) +4337*a(n-34) -722*a(n-35) +239*a(n-36) +807*a(n-37) +390*a(n-38) -72*a(n-39) -72*a(n-40) for n>41
EXAMPLE
Some solutions for n=4
..0..1..0..0..0..1..0....0..0..1..0..0..0..0....0..0..0..0..0..0..1
..0..0..0..0..0..0..1....0..0..0..0..0..0..0....1..0..0..0..0..1..0
..0..0..0..0..0..0..0....0..0..0..0..0..0..0....0..0..0..0..0..0..0
..0..0..0..0..0..0..0....1..0..0..0..0..0..0....1..0..0..0..0..0..0
..0..0..1..0..0..0..1....0..0..0..0..1..0..0....0..1..0..0..0..0..0
..0..0..0..1..0..0..0....1..0..0..0..0..1..0....1..0..0..0..1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 10 2015
STATUS
approved