# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a203961 Showing 1-1 of 1 %I A203961 #5 Mar 31 2012 12:37:00 %S A203961 1579,45307,2774984,157316750,7594654075,307121002440,10649020852202, %T A203961 323057300197928,8726668452309006,212841486133370354, %U A203961 4739849013582481100,97256290892559264697,1852532779115705386166,32962761352984953106390 %N A203961 Number of (n+1)X5 0..2 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) such that rows of b(i,j) and columns of c(i,j) are lexicographically nondecreasing %C A203961 Column 4 of A203965 %H A203961 R. H. Hardin, Table of n, a(n) for n = 1..210 %e A203961 Some solutions for n=4 %e A203961 ..2..1..1..1..1....2..2..2..2..2....0..1..2..1..0....1..1..2..1..1 %e A203961 ..1..2..2..2..2....2..2..2..2..2....1..1..0..1..2....1..2..1..2..2 %e A203961 ..2..2..2..2..2....2..2..2..2..2....1..1..2..1..1....2..1..2..2..2 %e A203961 ..2..2..2..2..2....2..2..2..2..2....0..2..1..2..2....1..2..2..2..2 %e A203961 ..2..2..2..2..2....2..2..2..2..2....2..1..2..2..1....1..2..2..2..2 %K A203961 nonn %O A203961 1,1 %A A203961 _R. H. Hardin_ Jan 08 2012 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE