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 A240376 T(n,k)=Number of nXk 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest, modulo 4 6
 2, 3, 3, 4, 11, 4, 7, 21, 21, 7, 10, 67, 75, 67, 10, 15, 155, 450, 450, 155, 15, 24, 353, 1729, 5161, 1729, 353, 24, 35, 998, 7233, 36398, 36398, 7233, 998, 35, 54, 2256, 36148, 271764, 486179, 271764, 36148, 2256, 54, 83, 5639, 139855, 2492182, 6436979 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ..2.....3.......4..........7...........10............15.............24 ..3....11......21.........67..........155...........353............998 ..4....21......75........450.........1729..........7233..........36148 ..7....67.....450.......5161........36398........271764........2492182 .10...155....1729......36398.......486179.......6436979......110122847 .15...353....7233.....271764......6436979.....169838571.....5145071133 .24...998...36148....2492182....110122847....5145071133...296413962369 .35..2256..139855...17380978...1403151574..121626491919.12947745036751 .54..5639..645733..143489019..20729739995.3384817934297 .83.14624.2919837.1182292032.314460587672 LINKS R. H. Hardin, Table of n, a(n) for n = 1..111 FORMULA Empirical for column k: k=1: a(n) = a(n-2) +2*a(n-3) k=2: [order 15] for n>17 EXAMPLE Some solutions for n=4 k=4 ..3..2..3..3....3..3..2..3....2..2..3..2....3..3..2..3....3..2..3..3 ..2..0..1..2....3..2..0..3....2..1..1..0....3..1..2..1....2..1..1..2 ..3..1..2..1....2..0..2..0....3..1..2..1....2..2..2..2....3..3..2..0 ..2..1..1..2....3..1..0..2....2..0..2..2....2..0..0..0....2..1..2..0 CROSSREFS Column 1 is A159288(n+1) Sequence in context: A293984 A207608 A290818 * A118963 A127641 A106821 Adjacent sequences:  A240373 A240374 A240375 * A240377 A240378 A240379 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Apr 04 2014 STATUS approved

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Last modified May 26 02:35 EDT 2019. Contains 323579 sequences. (Running on oeis4.)