# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a201274 Showing 1-1 of 1 %I A201274 #12 Mar 18 2024 08:44:26 %S A201274 1,3,16,21,199,556,442,2827,5680,3651,19960,35039,19820,96084,151800, %T A201274 78205,354360,525467,255143,1089594,1531163,707770,2908481,3937393, %U A201274 1758805,6976823,9145189,3964264,15328243,19618905,8309214,31406219,39327693,16320584,60602426 %N A201274 Number of n X 5 0..2 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other. %H A201274 Alois P. Heinz, Table of n, a(n) for n = 0..200 (terms n = 1..141 from R. H. Hardin) %e A201274 Some solutions for n=6 %e A201274 ..0..0..0..0..0....0..0..0..0..2....0..0..0..0..0....0..0..0..0..0 %e A201274 ..0..1..1..1..1....0..0..0..1..2....0..0..0..0..0....0..1..1..1..2 %e A201274 ..0..1..1..1..2....0..0..0..1..2....1..1..1..2..2....0..1..1..2..2 %e A201274 ..0..1..2..2..2....1..1..1..1..2....1..1..1..2..2....0..1..1..2..2 %e A201274 ..0..1..2..2..2....1..1..2..2..2....1..1..1..2..2....0..1..1..2..2 %e A201274 ..0..1..2..2..2....1..1..2..2..2....1..2..2..2..2....0..1..2..2..2 %Y A201274 Column 5 of A201277. %K A201274 nonn %O A201274 0,2 %A A201274 _R. H. Hardin_, Nov 29 2011 %E A201274 a(0)=1 prepended by _Alois P. Heinz_, Mar 18 2024 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE