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A224208 Number of 6 X n 0..3 arrays with rows unimodal and antidiagonals nondecreasing. 1

%I #8 Apr 11 2022 18:04:45

%S 4096,1600000,72105068,1229044416,12652618110,96914926654,

%T 618703866073,3548209715979,19271137728483,102347986047920,

%U 537384393939360,2776104877172612,13950578706978266,67469676772365413,311817626166418846

%N Number of 6 X n 0..3 arrays with rows unimodal and antidiagonals nondecreasing.

%C Row 6 of A224204.

%H R. H. Hardin, <a href="/A224208/b224208.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A224208/a224208.txt">Empirical polynomial of degree 36</a>

%F Empirical polynomial of degree 36 (see link above).

%e Some solutions for n=3

%e ..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0

%e ..0..0..2....0..0..2....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0

%e ..0..2..2....0..2..0....2..2..2....2..2..1....0..0..1....2..2..1....2..2..1

%e ..2..3..2....2..3..0....2..3..0....3..3..1....0..2..1....2..2..2....2..2..1

%e ..3..2..0....3..2..2....3..0..0....3..1..1....2..2..2....3..3..3....2..2..2

%e ..3..2..0....2..3..1....3..0..0....1..3..1....3..2..1....3..3..1....2..3..2

%Y Cf. A224204.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 01 2013

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)