A226716 Number of nX7 (-1,0,1) arrays of determinants of 2X2 subblocks of some (n+1)X8 binary array

1331, 469273, 67402167, 9326184515, 1412775737517, 219013376708219, 33686064493125445, 5158814075664351755, 790219064809543544019, 121119067554834244254625, 18565905217863946042822197

Offset

1,1

Comments

Column 7 of A226717

Links

R. H. Hardin, Table of n, a(n) for n = 1..15

Example

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

Crossrefs

Sequence in context: A036528 A052052 A122659 * A076443 A278936 A263613

Adjacent sequences: A226713 A226714 A226715 * A226717 A226718 A226719

Keyword

nonn

Author

R. H. Hardin Jun 15 2013

Status

approved