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 A263224 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with each row and column divisible by 5, read as a base-3 number with top and left being the most significant digits. 8
 1, 2, 2, 4, 14, 4, 7, 72, 72, 7, 13, 343, 1009, 343, 13, 26, 1920, 12601, 12601, 1920, 26, 52, 11444, 198892, 475539, 198892, 11444, 52, 103, 68112, 3345984, 22342751, 22342751, 3345984, 68112, 103, 205, 405019, 56362801, 1094138875, 3126162435 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Table starts ...1......2.........4.............7...............13...................26 ...2.....14........72...........343.............1920................11444 ...4.....72......1009.........12601...........198892..............3345984 ...7....343.....12601........475539.........22342751...........1094138875 ..13...1920....198892......22342751.......3126162435.........456363243352 ..26..11444...3345984....1094138875.....456363243352......199878687706434 ..52..68112..56362801...53375395657...66317081173996....87072717791078712 .103.405019.951167305.2607171566653.9651690803653879.37998530090131229539 LINKS R. H. Hardin, Table of n, a(n) for n = 1..144 FORMULA Empirical for column k: k=1: a(n) = 3*a(n-1) -3*a(n-2) +3*a(n-3) -2*a(n-4) k=2: [order 16] k=3: [order 26] k=4: [order 89] EXAMPLE Some solutions for n=3 k=4 ..0..0..2..0..2....0..2..1..0..2....2..2..2..0..1....2..2..2..0..1 ..1..1..1..2..2....1..0..2..0..1....0..0..0..0..0....0..1..0..2..2 ..0..0..2..2..1....2..2..1..0..0....0..0..2..0..2....2..0..2..0..0 ..1..1..1..1..0....0..0..2..0..2....1..1..0..0..2....0..2..0..2..0 CROSSREFS Column 1 is A262267(n-1). Sequence in context: A130797 A248238 A268009 * A267957 A204978 A204705 Adjacent sequences:  A263221 A263222 A263223 * A263225 A263226 A263227 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Oct 12 2015 STATUS approved

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Last modified September 21 15:47 EDT 2021. Contains 347598 sequences. (Running on oeis4.)