A226713 Number of nX4 (-1,0,1) arrays of determinants of 2X2 subblocks of some (n+1)X5 binary array

67, 2393, 49019, 977939, 20577215, 439030021, 9326184515, 197633166633, 4188392176965, 88790771781371, 1882395556896109, 39906413076233653, 845997890367543773, 17934778981002807239, 380209955175888381833

Offset

1,1

Comments

Column 4 of A226717

Links

R. H. Hardin, Table of n, a(n) for n = 1..111

Example

Some solutions for n=3
.-1..0.-1..0....0..0..0.-1...-1..1.-1.-1....0.-1.-1..0...-1..0..1.-1
..1.-1..0..0....0..0..0.-1....0..0..0..1...-1..1..1..0....1..0.-1.-1
..0..1..0.-1...-1..0..0..0....1.-1.-1..1....1.-1.-1..0....0.-1..1..0

Crossrefs

Sequence in context: A017783 A017730 A078953 * A069397 A103727 A120663

Adjacent sequences: A226710 A226711 A226712 * A226714 A226715 A226716

Keyword

nonn

Author

R. H. Hardin Jun 15 2013

Status

approved