A369175 - cp's OEIS frontend

A369175 Number of regions in a graph of n adjacent rectangles in a row with all possible diagonals drawn, as in A306302, but without the rectangles' edges which are perpendicular to the row.

n	a(n)
1	2
2	12
3	36
4	86
5	180
6	330
7	570
8	918
9	1408
10	2058
11	2946
12	4054
13	5502
14	7278
15	9430
16	12006
17	15174
18	18846
19	23268
20	28338
21	34172
22	40806
23	48546
24	57174
25	67022
26	78006
27	90324
28	103910
29	119276
30	135978
31	154722
32	175226
33	197686
34	222098
35	248790
36	277462
37	309050
38	343086
39	379858
40	419182
41	462106
42	507678

[2, 12, 36, 86, 180, 330, 570, 918, 1408, 2058, 2946, 4054, 5502, 7278, 9430, 12006, 15174, 18846, 23268, 28338, 34172, 40806, 48546, 57174, 67022, 78006, 90324, 103910, 119276, 135978, 154722, 175226, 197686, 222098, 248790, 277462, 309050, 343086, 379858, 419182, 462106, 507678]

cp's OEIS Frontend

A369175 Number of regions in a graph of n adjacent rectangles in a row with all possible diagonals drawn, as in A306302, but without the rectangles' edges which are perpendicular to the row.

Table of values

List of values