OFFSET
0,1
COMMENTS
EXAMPLE
Illustration of initial terms (n = 1..6):
. _ _ _ _
. _ _ _ |_ _ _ |_
. _ _ _ |_ _ _| |_ _ _| |_
. _ _ |_ _ |_ |_ _ |_ _ |_ _ |_ _ |
. _ _ |_ _|_ |_ _|_ | |_ _|_ | | |_ _|_ | | |
. _ |_ | |_ | | |_ | | | |_ | | | | |_ | | | | |
. |_| |_|_| |_|_|_| |_|_|_|_| |_|_|_|_|_| |_|_|_|_|_|_|
.
. 4 6 8 12 14 20
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Omar E. Pol, Nov 09 2017
STATUS
approved