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 A254361 T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and the central column and the two maximums of the diagonal and antidiagonal nondecreasing horizontally and vertically 9
 512, 2868, 2868, 15051, 21530, 15051, 72939, 155358, 155358, 72939, 332330, 998646, 1644606, 998646, 332330, 1451174, 5989018, 14816409, 14816409, 5989018, 1451174, 6117882, 34611365, 121121672, 179564001, 121121672, 34611365, 6117882 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .......512........2868.........15051...........72939............332330 ......2868.......21530........155358..........998646...........5989018 .....15051......155358.......1644606........14816409.........121121672 .....72939......998646......14816409.......179564001........1960008103 ....332330.....5989018.....121121672......1960008103.......28647631972 ...1451174....34611365.....950695191.....20623554260......404664551769 ...6117882...194880155....7242659832....209075168007.....5503997022610 ..25078442..1079370642...54039599389...2066266192012....73077411194357 .100521610..5917060764..398187593710..20125123063477...956748934835032 .395707664.32220109124.2910414937365.194086990444845.12412411293412166 LINKS R. H. Hardin, Table of n, a(n) for n = 1..263 FORMULA Empirical for column k: k=1: [linear recurrence of order 26] for n>27 k=2: [order 49] for n>55 k=3: [order 66] for n>81 EXAMPLE Some solutions for n=2 k=4 ..0..0..0..0..1..0....0..1..0..1..0..0....0..0..0..1..1..0....0..0..0..0..0..1 ..0..0..0..1..0..1....1..0..0..1..1..0....1..0..0..1..1..0....1..0..0..1..1..0 ..1..0..0..1..0..1....1..1..0..1..1..0....0..1..0..1..1..0....1..1..0..1..1..0 ..1..0..0..0..0..1....1..0..0..1..0..0....0..0..1..1..1..0....0..0..0..1..1..0 CROSSREFS Sequence in context: A254743 A254736 A254586 * A254354 A254189 A253801 Adjacent sequences: A254358 A254359 A254360 * A254362 A254363 A254364 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Jan 29 2015 STATUS approved

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Last modified August 9 16:51 EDT 2024. Contains 375044 sequences. (Running on oeis4.)