OFFSET
0,6
COMMENTS
The standard order of compositions is given by A066099.
LINKS
Alois P. Heinz, Rows n = 0..14, flattened
FORMULA
For a composition b(1),...,b(k), a(n) = Sum_{i=1}^{k-1} b(i) b(i+1).
EXAMPLE
Composition number 11 is 2,1,1; 2*1+1*1 = 3, so a(11) = 3.
The table starts:
0
0
0 1
0 2 2 2
CROSSREFS
KEYWORD
easy,nonn,tabf
AUTHOR
Franklin T. Adams-Watters, Nov 06 2006
STATUS
approved