OFFSET
0,2
COMMENTS
EXAMPLE
Illustration of initial terms (n = 0..9):
. _ _ _ _
. _ _ _ |_ _ _ |_
. _ _ _ |_ _ _| |_ _ _| |_|_
. _ _ |_ _ |_ |_ _ |_ _ |_ _ |_ _ |
. _ _ |_ _|_ |_ _|_ | |_ _|_ | | |_ _|_ | | |
. _ |_ | |_ | | |_ | | | |_ | | | | |_ | | | | |
. . |_| |_|_| |_|_|_| |_|_|_|_| |_|_|_|_|_| |_|_|_|_|_|_|
.
. 1 4 7 11 16 20 28
.
. _ _ _ _ _
. _ _ _ _ _ |_ _ _ _ _|
. _ _ _ _ |_ _ _ _ | |_ _ _ _ |_ _
. |_ _ _ _| |_ _ _ _| |_ |_ _ _ _| |_ |
. |_ _ _ |_ |_ _ _ |_ |_ _ |_ _ _ |_ |_|_ _
. |_ _ _| |_|_ _ |_ _ _| |_|_ _ | |_ _ _| |_|_ _ | |
. |_ _ |_ _ | | |_ _ |_ _ | | | |_ _ |_ _ | | | |
. |_ _|_ | | | | |_ _|_ | | | | | |_ _|_ | | | | | |
. |_ | | | | | | |_ | | | | | | | |_ | | | | | | | |
. |_|_|_|_|_|_|_| |_|_|_|_|_|_|_|_| |_|_|_|_|_|_|_|_|_|
.
. 32 39 46
.
.
Illustration of the two-dimensional diagram after 29 stages (contains 239 vertices, 300 edges and 62 regions or subparts):
._ _ _ _ _ _ _ _ _ _ _ _ _ _ _
|_ _ _ _ _ _ _ _ _ _ _ _ _ _ _|
|_ _ _ _ _ _ _ _ _ _ _ _ _ _ |
|_ _ _ _ _ _ _ _ _ _ _ _ _ | |
|_ _ _ _ _ _ _ _ _ _ _ _ _| | |
|_ _ _ _ _ _ _ _ _ _ _ _ | | |_ _ _
|_ _ _ _ _ _ _ _ _ _ _ _| | |_ _ _ |
|_ _ _ _ _ _ _ _ _ _ _ | | |_ _ | |_
|_ _ _ _ _ _ _ _ _ _ _| | |_ _ _| |_ |_
|_ _ _ _ _ _ _ _ _ _ | | |_ _ |_ _| |_|_
|_ _ _ _ _ _ _ _ _ _| | |_ _ | |_ |_ _ |_ _
|_ _ _ _ _ _ _ _ _ | |_ _ _| |_ |_ | |_ _ |
|_ _ _ _ _ _ _ _ _| | |_ _ |_ |_ |_|_ _ | |
|_ _ _ _ _ _ _ _ | |_ _ |_ _|_ |_ _ | | | |_ _ _ _ _ _
|_ _ _ _ _ _ _ _| | |_ _| |_ | |_ _ | | |_|_ _ _ _ _ | |
|_ _ _ _ _ _ _ | |_ _ |_ |_|_ | | |_|_ _ _ _ _ | | | |
|_ _ _ _ _ _ _| |_ _ |_ |_ _ | | |_ _ _ _ _ | | | | | |
|_ _ _ _ _ _ | |_ |_ |_ | | |_|_ _ _ _ | | | | | | | |
|_ _ _ _ _ _| |_ _| |_|_ | |_|_ _ _ _ | | | | | | | | | |
|_ _ _ _ _ | |_ |_ _ | |_ _ _ _ | | | | | | | | | | | |
|_ _ _ _ _| |_ |_ | |_|_ _ _ | | | | | | | | | | | | | |
|_ _ _ _ |_ _|_ |_|_ _ _ | | | | | | | | | | | | | | | |
|_ _ _ _| |_ | |_ _ _ | | | | | | | | | | | | | | | | | |
|_ _ _ |_ |_|_ _ | | | | | | | | | | | | | | | | | | | |
|_ _ _| |_|_ _ | | | | | | | | | | | | | | | | | | | | | |
|_ _ |_ _ | | | | | | | | | | | | | | | | | | | | | | | |
|_ _|_ | | | | | | | | | | | | | | | | | | | | | | | | | |
|_ | | | | | | | | | | | | | | | | | | | | | | | | | | | |
|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|
.
CROSSREFS
For the definition of "subparts" see A279387.
For the triangle of sums of subparts see A279388.
Cf. A317292 (number of edges).
Cf. A060831 (number of regions or subparts).
Compare with A294723 (analog for the diagram that contains only parts).
First differs from A294723 at a(6).
KEYWORD
nonn,more
AUTHOR
Omar E. Pol, Jul 27 2018
STATUS
approved