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 A284165 T(n,k) = Number of n X k 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero. 8
 1, 2, 2, 3, 4, 3, 6, 13, 13, 6, 10, 42, 62, 42, 10, 19, 134, 461, 461, 134, 19, 33, 467, 2872, 5888, 2872, 467, 33, 62, 1689, 21790, 80072, 80072, 21790, 1689, 62, 112, 6210, 154108, 1142173, 2179255, 1142173, 154108, 6210, 112, 212, 23178, 1174235 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Table starts ...1.....2.......3..........6............10..............19.................33 ...2.....4......13.........42...........134.............467...............1689 ...3....13......62........461..........2872...........21790.............154108 ...6....42.....461.......5888.........80072.........1142173...........16699997 ..10...134....2872......80072.......2179255........63520018.........1852406216 ..19...467...21790....1142173......63520018......3648835932.......213897742464 ..33..1689..154108...16699997....1852406216....213897742464.....25064817057781 ..62..6210.1174235..247899694...55270158210..12712253739523...2981736353245523 .112.23178.8682209.3717494360.1656400271264.762954434250117.357844048109256955 LINKS R. H. Hardin, Table of n, a(n) for n = 1..143 EXAMPLE Some solutions for n=4, k=4 ..0..1..0..1. .0..0..0..1. .0..0..0..1. .0..0..0..1. .0..1..1..0 ..0..0..0..1. .1..0..0..1. .0..1..1..1. .0..1..1..1. .1..0..1..0 ..1..1..0..1. .1..0..1..1. .0..1..1..1. .0..0..1..1. .0..1..1..0 ..0..1..0..1. .0..1..1..1. .0..0..0..1. .1..0..1..1. .0..1..0..1 CROSSREFS Column 1 is A274160(n+1). Sequence in context: A231227 A231441 A284199 * A284113 A324480 A164975 Adjacent sequences:  A284162 A284163 A284164 * A284166 A284167 A284168 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Mar 21 2017 STATUS approved

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Last modified August 3 14:40 EDT 2021. Contains 346438 sequences. (Running on oeis4.)