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 A197648 T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,2,2,0,2 for x=0,1,2,3,4 8
 1, 1, 1, 1, 2, 1, 1, 11, 11, 1, 1, 31, 82, 31, 1, 1, 66, 342, 342, 66, 1, 1, 185, 1649, 2910, 1649, 185, 1, 1, 595, 9007, 25273, 25273, 9007, 595, 1, 1, 1760, 49381, 251972, 407810, 251972, 49381, 1760, 1, 1, 4857, 256485, 2579814, 7296769, 7296769, 2579814 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 COMMENTS Every 0 is next to 0 4's, every 1 is next to 1 2's, every 2 is next to 2 2's, every 3 is next to 3 0's, every 4 is next to 4 2's Table starts .1.....1.......1..........1............1...............1..................1 .1.....2......11.........31...........66.............185................595 .1....11......82........342.........1649............9007..............49381 .1....31.....342.......2910........25273..........251972............2579814 .1....66....1649......25273.......407810.........7296769..........132750533 .1...185....9007.....251972......7296769.......243912221.........8248011722 .1...595...49381....2579814....132750533......8248011722.......520354155777 .1..1760..256485...24550379...2314131736....265348341492.....31036479268872 .1..4857.1303838..230860577..40063929560...8500602391949...1833924613834652 .1.13817.6775152.2228487362.703264936092.277030071745596.110108685283374089 LINKS R. H. Hardin, Table of n, a(n) for n = 1..161 EXAMPLE Some solutions containing all values 0 to 4 for n=6 k=4 ..0..3..0..0....0..0..0..0....0..3..0..0....2..2..0..0....0..0..0..0 ..0..0..0..3....0..3..0..0....3..0..3..0....2..2..0..3....0..0..0..3 ..0..3..0..0....2..2..2..1....0..2..2..2....0..0..0..0....0..0..1..0 ..2..2..2..0....2..4..2..0....0..2..4..2....1..2..2..2....1..2..2..2 ..2..4..2..1....2..2..2..1....1..2..2..2....0..2..4..2....1..2..4..2 ..2..2..2..1....1..0..1..0....0..0..0..1....1..2..2..2....0..2..2..2 CROSSREFS Sequence in context: A234013 A158202 A176307 * A066094 A160625 A297762 Adjacent sequences:  A197645 A197646 A197647 * A197649 A197650 A197651 KEYWORD nonn,tabl AUTHOR R. H. Hardin Oct 16 2011 STATUS approved

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Last modified October 24 02:14 EDT 2018. Contains 316541 sequences. (Running on oeis4.)