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A236645 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the maximum plus the upper median plus the lower median minus the minimum of every 2X2 subblock 5
81, 518, 518, 3313, 5572, 3313, 21276, 59602, 59602, 21276, 136697, 642482, 1059502, 642482, 136697, 877196, 6911962, 19049512, 19049512, 6911962, 877196, 5629192, 74396558, 341611331, 573664384, 341611331, 74396558, 5629192, 36133600 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
.........81.........518..........3313..........21276.........136697
........518........5572.........59602.........642482........6911962
.......3313.......59602.......1059502.......19049512......341611331
......21276......642482......19049512......573664384....17220590706
.....136697.....6911962.....341611331....17220590706...865781100627
.....877196....74396558....6135691048...518482030480.43712112471052
....5629192...800122550..110014457016.15568191703124
...36133600..8610775166.1974419685940
..231937284.92635234654
.1488661856
LINKS
FORMULA
Empirical for column k:
k=1: [linear recurrence of order 23]
EXAMPLE
Some solutions for n=2 k=4
..0..0..2..2..0....0..2..0..0..1....0..0..0..1..2....0..1..0..1..0
..2..1..2..2..1....2..0..0..1..2....0..0..1..1..0....0..2..1..0..0
..2..2..1..2..1....1..0..1..0..0....1..0..2..0..2....2..0..2..0..2
CROSSREFS
Sequence in context: A076090 A183428 A236663 * A253314 A253662 A253731
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jan 29 2014
STATUS
approved

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Last modified March 29 00:26 EDT 2024. Contains 371264 sequences. (Running on oeis4.)