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A237315
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T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the lower median minus the minimum of every 2X2 subblock equal
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7
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256, 1352, 1352, 7398, 12690, 7398, 42474, 120650, 120650, 42474, 246644, 1218584, 1928204, 1218584, 246644, 1457838, 12256598, 33313192, 33313192, 12256598, 1457838, 8652288, 126084160, 564748168, 1008893682, 564748168, 126084160
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OFFSET
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1,1
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COMMENTS
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Table starts
........256..........1352............7398.............42474.............246644
.......1352.........12690..........120650...........1218584...........12256598
.......7398........120650.........1928204..........33313192..........564748168
......42474.......1218584........33313192........1008893682........29705879570
.....246644......12256598.......564748168.......29705879570......1497953660532
....1457838.....126084160......9923274434......921202878454.....81336374507888
....8652288....1291478032....171975075815....28008850432408...4273223840276532
...51729960...13373871324...3048207305436...882133454021878.236863001850227620
..309766574..138091649434..53496852362572.27361616605419182
.1861078542.1434854215354.954253356186506
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..84
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FORMULA
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Empirical for column k:
k=1: [linear recurrence of order 37]
k=2: [order 99]
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EXAMPLE
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Some solutions for n=2 k=4
..0..2..2..2..2....0..0..0..2..1....0..2..1..2..2....0..0..3..2..3
..1..2..3..3..3....3..0..3..0..2....0..3..1..0..1....0..3..0..0..0
..2..2..3..3..3....0..0..0..3..0....0..3..1..2..1....0..0..3..3..1
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CROSSREFS
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Sequence in context: A206327 A242257 A206320 * A237309 A188865 A187964
Adjacent sequences: A237312 A237313 A237314 * A237316 A237317 A237318
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KEYWORD
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nonn,tabl
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AUTHOR
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R. H. Hardin, Feb 06 2014
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STATUS
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approved
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