OFFSET
1,1
COMMENTS
Partial sums of A244363.
FORMULA
a(n) = 2*A244360(n).
a(n) = A244370(n)/4. - Omar E. Pol, Oct 18 2014
EXAMPLE
Illustration of the structure after 7 stages (Contains 50 toothpicks):
.
. _ _ _ _
. _ _ _ _|
. _ _ _ |_
. _ _ _| |_ _
. _ _ |_ _ | |
. _ _|_ | | | |
. _ | | | | | |
. | | | | | | |
.
. 1 2 3 4 5 6 7
.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Omar E. Pol, Jun 26 2014
EXTENSIONS
More terms from Omar E. Pol, Oct 18 2014
STATUS
approved