A186061 - OEIS

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A186061

Number of (n+2)X9 binary arrays with each 3X3 subblock having a positive determinant

60588, 1206478, 19416799, 275207345, 4584860256, 72905263923, 1130708781343, 18130539910403, 287526402899408, 4535336921964336, 72099241003949754, 1142655253137546939, 18084010448517161871, 286883699606121628553

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 7 of A186063

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

EXAMPLE

Some solutions for 4X9

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

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

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