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 A203102 Number of n X n binary arrays with every 1 immediately preceded by 0 0 to the left or above 0
 1, 1, 23, 592, 27930, 4984843, 2482513429, 3024912314764, 10252037660298200, 96894129507021776898, 2459526431235740649572096, 169397666939694686725348936336, 31898632588336093438359543528177154 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Diagonal of A203108 LINKS EXAMPLE Some solutions for n=5 ..0..0..0..0..0....0..0..0..0..1....0..0..0..0..0....0..0..1..0..0 ..0..0..0..0..0....0..0..0..0..1....0..0..0..1..0....0..0..0..0..0 ..0..0..0..0..0....0..0..0..0..0....1..0..1..0..0....0..1..0..0..0 ..0..1..1..1..0....1..0..1..1..0....0..0..1..0..0....0..0..1..0..1 ..0..0..1..0..1....0..0..0..1..1....0..0..0..1..1....0..0..0..0..1 CROSSREFS Sequence in context: A043347 A015696 A106538 * A294995 A142750 A202667 Adjacent sequences:  A203099 A203100 A203101 * A203103 A203104 A203105 KEYWORD nonn AUTHOR R. H. Hardin Dec 29 2011 STATUS approved

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Last modified January 23 21:55 EST 2021. Contains 340386 sequences. (Running on oeis4.)