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A203869 Number of (n+1)X8 0..4 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) nondecreasing in column and row directions, respectively 1

%I #5 Mar 31 2012 12:36:58

%S 5914273,309154358,12355307346,332477439628,6583402402582,

%T 102773744858440,1324162075797758,14556749994491175,

%U 139577809129483158,1187838764971657710,9088015667106353900,63188301526522364558

%N Number of (n+1)X8 0..4 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) nondecreasing in column and row directions, respectively

%C Column 7 of A203870

%H R. H. Hardin, <a href="/A203869/b203869.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

%e ..4..3..3..4..4..4..4..4....2..1..3..2..3..2..3..4....3..3..2..3..2..3..2..4

%e ..3..4..4..4..4..4..4..4....3..4..3..4..3..4..3..4....3..3..4..3..4..3..4..3

%e ..3..4..4..4..4..4..4..4....4..3..4..3..4..3..4..3....2..4..3..4..3..4..3..4

%e ..3..4..4..4..4..4..4..4....3..4..3..4..3..4..3..4....3..3..4..3..4..3..4..3

%e ..3..4..4..4..4..4..4..4....4..3..4..3..4..3..4..3....4..4..3..4..3..4..3..4

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 07 2012

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Last modified April 23 15:20 EDT 2024. Contains 371916 sequences. (Running on oeis4.)