A184127 - OEIS

%I #7 Oct 30 2022 15:47:24

%S 120,142376,581588614,2895890669208,12323643023399737,

%T 42630936592613426327,122233352821430587249163,

%U 298254428253388683225868035,633084498761485396427699934865

%N Number of n X 7 0..3 arrays with rows and columns in nondecreasing order.

%C Column 7 of A184129.

%H R. H. Hardin, <a href="/A184127/b184127.txt">Table of n, a(n) for n = 1..19</a>

%e Some solutions for 3 X 7

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

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

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

%Y Cf. A184129.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 09 2011