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 A222878 T(n,k)=Number of nXk 0..3 arrays with no more than floor(nXk/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order 10
 1, 1, 2, 2, 11, 5, 11, 122, 131, 15, 34, 1814, 6282, 2150, 51, 131, 26311, 409775, 443510, 32491, 187, 438, 399849, 19707855, 95867967, 23794078, 533186, 715, 2150, 6013669, 1340197778, 20978414941, 22794825314, 1698174722, 8362152, 2795, 7676 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Table starts .....1..........1...............2...................11......................34 .....2.........11.............122.................1814...................26311 .....5........131............6282...............409775................19707855 ....15.......2150..........443510.............95867967.............20978414941 ....51......32491........23794078..........22794825314..........16473931317022 ...187.....533186......1698174722........5472896849943.......17791003053622809 ...715....8362152.....93656293632.....1322676376672081....14337592109053271558 ..2795..135650378...6637413406814...321195816580955511.15577784123509878927189 .11051.2155759835.372075279639542.78284744747263499257 LINKS R. H. Hardin, Table of n, a(n) for n = 1..82 EXAMPLE Some solutions for n=3 k=4 ..0..0..0..1....0..0..1..0....0..0..1..2....0..1..0..1....0..1..0..2 ..2..3..1..2....0..2..2..3....1..3..1..0....0..2..2..2....1..0..1..3 ..0..2..3..0....0..3..2..1....1..2..0..2....1..0..0..0....2..0..2..1 CROSSREFS Column 1 is A007581(n-1) Row 1 is A222650 Sequence in context: A141651 A213990 A275429 * A090525 A328455 A265530 Adjacent sequences:  A222875 A222876 A222877 * A222879 A222880 A222881 KEYWORD nonn,tabl AUTHOR R. H. Hardin Mar 08 2013 STATUS approved

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Last modified January 21 17:26 EST 2022. Contains 350479 sequences. (Running on oeis4.)