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 A293087 T(n,k) = Number of n X k 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1. 14
 0, 0, 0, 0, 0, 0, 0, 5, 1, 0, 0, 23, 53, 10, 0, 1, 124, 486, 498, 60, 0, 3, 518, 4091, 8108, 4013, 304, 0, 10, 2103, 32070, 125848, 126903, 31689, 1420, 0, 24, 8304, 246852, 1900201, 3786544, 1955375, 246743, 6312, 0, 60, 32561, 1897509, 28709764 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,8 COMMENTS Table starts .0.....0........0..........0.............0................1..................3 .0.....0........5.........23...........124..............518...............2103 .0.....1.......53........486..........4091............32070.............246852 .0....10......498.......8108........125848..........1900201...........28709764 .0....60.....4013.....126903.......3786544........112687158.........3370860734 .0...304....31689....1955375.....114271723.......6736259130.......400400301913 .0..1420...246743...30064393....3464680837.....405651046593.....48001754870966 .0..6312..1915490..462569756..105517939849...24578475941654...5797084510052322 .0.27167.14853287.7127871677.3226317873349.1496865603233666.704256987414278983 LINKS R. H. Hardin, Table of n, a(n) for n = 1..198 EXAMPLE Some solutions for n=4, k=4 ..0..0..1..0. .0..0..0..0. .0..0..0..0. .0..0..1..1. .1..1..0..0 ..0..0..0..0. .1..0..0..0. .0..0..0..0. .0..1..1..1. .1..1..0..0 ..1..1..0..1. .1..0..0..1. .1..1..0..1. .0..0..0..0. .0..0..0..1 ..0..0..1..1. .0..0..0..0. .0..0..1..0. .0..1..0..0. .0..0..1..0 CROSSREFS Row 1 is A286209. Sequence in context: A283784 A361353 A281563 * A209349 A242095 A336169 Adjacent sequences: A293084 A293085 A293086 * A293088 A293089 A293090 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Sep 30 2017 STATUS approved

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Last modified April 14 20:39 EDT 2024. Contains 371667 sequences. (Running on oeis4.)