OFFSET
1,1
COMMENTS
Row 4 of A254260
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 6*a(n-1) +26*a(n-2) -146*a(n-3) -455*a(n-4) +1154*a(n-5) +6767*a(n-6) -2920*a(n-7) -42605*a(n-8) -35406*a(n-9) +58183*a(n-10) -151832*a(n-11) +683871*a(n-12) +6499614*a(n-13) +4735393*a(n-14) -51112984*a(n-15) -114140326*a(n-16) +136292264*a(n-17) +742062187*a(n-18) +366233074*a(n-19) -2329427252*a(n-20) -3608482848*a(n-21) +2542915684*a(n-22) +10811253048*a(n-23) +4756583856*a(n-24) -13607504608*a(n-25) -16300351552*a(n-26) -3936912896*a(n-27) +13639591168*a(n-28) +27310157824*a(n-29) +12147660800*a(n-30) -23610398720*a(n-31) -27889451008*a(n-32) -1292050432*a(n-33) +10694885376*a(n-34) +14263123968*a(n-35) +8161329152*a(n-36) -7736918016*a(n-37) -9831972864*a(n-38) +2157969408*a(n-39) +3774873600*a(n-40) -1207959552*a(n-41) for n>50
EXAMPLE
Some solutions for n=1
..0..1..0....1..0..1....1..0..1....0..1..0....0..0..0....0..1..0....0..0..0
..1..1..1....0..1..1....1..1..1....1..1..0....1..1..1....1..0..0....0..0..1
..0..1..1....1..1..0....1..0..1....1..1..0....0..0..1....0..1..1....1..0..0
..0..1..0....1..0..1....0..0..0....0..1..1....1..0..0....1..0..0....0..1..0
..1..1..0....1..0..0....0..1..1....0..1..0....0..1..1....0..0..1....0..0..0
..1..0..0....1..1..1....1..0..0....0..0..1....0..1..0....1..1..0....1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 27 2015
STATUS
approved