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 A284222 T(n,k) = Number of n X k 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero. 14
 1, 2, 2, 3, 6, 4, 6, 13, 19, 8, 10, 44, 70, 62, 16, 19, 143, 499, 467, 212, 32, 33, 495, 3214, 6511, 3224, 751, 64, 62, 1746, 22729, 85887, 91260, 23218, 2719, 128, 112, 6399, 163708, 1214427, 2417194, 1317770, 170155, 10002, 256, 212, 23776, 1209005 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Table starts ...1.....2.......3..........6............10..............19.................33 ...2.....6......13.........44...........143.............495...............1746 ...4....19......70........499..........3214...........22729.............163708 ...8....62.....467.......6511.........85887.........1214427...........17538010 ..16...212....3224......91260.......2417194........68272108.........1970768869 ..32...751...23218....1317770......69938626......3945536189.......227677212684 ..64..2719..170155...19371893....2058141264....232036495984.....26772321109067 .128.10002.1264605..288303232...61304713234..13815034342734...3187484402643589 .256.37258.9488108.4330336770.1842647045686.830095968128023.383012404461341362 LINKS R. H. Hardin, Table of n, a(n) for n = 1..198 EXAMPLE Some solutions for n=4 k=4 ..0..1..1..1. .0..1..0..1. .0..0..1..1. .0..1..1..1. .0..1..1..1 ..0..0..0..1. .0..0..1..1. .1..0..0..0. .0..0..1..0. .0..0..0..1 ..1..1..0..1. .0..1..0..1. .1..0..1..1. .1..1..0..1. .1..1..0..0 ..0..0..1..0. .1..0..0..1. .0..1..1..1. .0..1..0..0. .1..0..1..0 CROSSREFS Column 1 is A000079(n-1). Row 1 is A274160(n+1). Sequence in context: A254947 A185810 A015050 * A207623 A116447 A137757 Adjacent sequences: A284219 A284220 A284221 * A284223 A284224 A284225 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Mar 23 2017 STATUS approved

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Last modified April 24 14:09 EDT 2024. Contains 371960 sequences. (Running on oeis4.)