1,3

R. H. Hardin, Table of n, a(n) for n = 1..22

All solutions for n=4

..0..0..0..0....0..1..0..0....0..0..0..0

..0..0..1..0....1..0..1..0....0..0..0..0

..0..1..0..1....0..1..0..0....0..0..0..0

..0..0..1..0....0..0..0..0....0..0..0..0

Sequence in context: A005370 A112866 A041657 * A041789 A174899 A201370

Adjacent sequences: A191271 A191272 A191273 * A191275 A191276 A191277

nonn

R. H. Hardin May 29 2011

approved