OFFSET
0,5
COMMENTS
LINKS
EXAMPLE
Consider the structure with toothpicks of length 2 and D-toothpicks of length sqrt(2). After 3 stages the number of polygons in the structure is equal to 0. After 4 stages there are 2 hexagons, each with area = 6, so a(4) = 2. After 5 stages there are new 6 polygons: 2 hexagons, each with area = 8 and also 2 octagons, each with area = 14, so a(5) = 2+6 = 8.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Omar E. Pol, Aug 26 2011
STATUS
approved