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 A250710 Number of (3+1)X(n+1) 0..3 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction 1

%I

%S 2435,30719,301632,2492054,18235293,122690762,774796977,4673805813,

%T 27196779938,154066279127,854122044467,4658151131121,25068017810185,

%U 133534557525131,705429509431519,3702863919486346,19335819140017317

%N Number of (3+1)X(n+1) 0..3 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction

%C Row 3 of A250707

%H R. H. Hardin, <a href="/A250710/b250710.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A250710/a250710.txt">Empirical recurrence of order 65</a>

%F Empirical recurrence of order 65 (see link above)

%e Some solutions for n=2

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 26 2014

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Last modified January 20 03:25 EST 2022. Contains 350467 sequences. (Running on oeis4.)