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 A204800 T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing 8
 16, 47, 47, 125, 240, 125, 335, 1001, 1001, 335, 907, 4273, 6537, 4273, 907, 2470, 18550, 42214, 42214, 18550, 2470, 6740, 81009, 270148, 422426, 270148, 81009, 6740, 18406, 353975, 1729515, 4122638, 4122638, 1729515, 353975, 18406, 50278, 1547377 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ....16......47......125........335..........907...........2470............6740 ....47.....240.....1001.......4273........18550..........81009..........353975 ...125....1001.....6537......42214.......270148........1729515........11096511 ...335....4273....42214.....422426......4122638.......40446826.......398104735 ...907...18550...270148....4122638.....60519533......897624021.....13302221086 ..2470...81009..1729515...40446826....897624021....20321241222....457771763592 ..6740..353975.11096511..398104735..13302221086...457771763592..15605413576718 .18406.1547377.71369791.3932835872.197792658833.10349816580258.534307699718747 LINKS R. H. Hardin, Table of n, a(n) for n = 1..219 EXAMPLE Some solutions for n=4 k=3 ..1..0..0..0....1..1..0..0....1..0..0..1....1..1..1..0....1..0..1..1 ..1..0..1..1....1..0..0..0....0..0..0..1....0..0..0..0....0..0..0..0 ..0..0..0..0....0..0..0..1....0..1..0..0....0..1..1..1....0..1..1..0 ..0..1..1..0....0..1..0..0....0..0..0..0....0..0..0..0....0..0..0..0 ..0..1..1..1....0..1..0..1....0..0..1..1....1..0..1..1....1..1..1..1 CROSSREFS Column 1 is A204609 Sequence in context: A253231 A253350 A204616 * A194268 A292171 A204609 Adjacent sequences: A204797 A204798 A204799 * A204801 A204802 A204803 KEYWORD nonn,tabl AUTHOR R. H. Hardin Jan 19 2012 STATUS approved

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Last modified March 31 08:44 EDT 2023. Contains 361645 sequences. (Running on oeis4.)