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Number of nondecreasing arrangements of n+2 numbers in 0..n with the last equal to n and each after the second equal to the sum of one or two of the preceding three
1

%I #6 Mar 31 2012 12:36:19

%S 2,6,10,27,33,107,80,349,264,735,357,2809,736,2565,3262,10997,1258,

%T 17921,2313,34880,12649,17448,4348,211004,15839,42957,49372,169716,

%U 10846,430082,11210,1004561,85127,101536,102904,2715826,20183,190249,208100

%N Number of nondecreasing arrangements of n+2 numbers in 0..n with the last equal to n and each after the second equal to the sum of one or two of the preceding three

%C Diagonal of A190041

%H R. H. Hardin, <a href="/A190034/b190034.txt">Table of n, a(n) for n = 1..142</a>

%e All solutions for n=3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ May 04 2011