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 A183773 Half the number of (n+1)X(n+1) binary arrays with no 2X2 subblock having exactly 2 ones 0
 5, 47, 730, 21935, 1146964, 112439612, 19815396763, 6453534773135, 3829236554668274, 4179465974043040784, 8354373579461755560239, 30686484702497770109712496, 206872691877488790419478443459 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A183782 LINKS Table of n, a(n) for n=1..13. EXAMPLE Some solutions with a(1,1)=0 for 3X3 ..0..1..0....0..0..0....0..0..1....0..0..0....0..0..0....0..1..0....0..0..0 ..0..0..0....1..0..0....0..0..0....0..0..1....0..0..0....0..0..0....0..1..0 ..0..0..0....0..0..0....1..0..0....0..1..1....1..0..1....0..0..1....1..1..1 CROSSREFS Sequence in context: A254530 A086555 A246040 * A247982 A222078 A061572 Adjacent sequences: A183770 A183771 A183772 * A183774 A183775 A183776 KEYWORD nonn AUTHOR R. H. Hardin Jan 07 2011 STATUS approved

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Last modified August 11 19:17 EDT 2024. Contains 375073 sequences. (Running on oeis4.)