A331766 - cp's OEIS frontend

A331766 Number of regions formed by drawing the lines connecting any two of the 2*(n+2) perimeter points of a 3 X (n+1) rectangular grid of points (or equally, a 2 X n grid of squares).

n	a(n)
1	16
2	56
3	142
4	296
5	544
6	892
7	1436
8	2136
9	3066
10	4272
11	5840
12	7688
13	10094
14	12884
15	16182
16	20192
17	24918
18	30200
19	36614
20	43692
21	51756
22	61008
23	71544
24	83040
25	96202
26	110692
27	126702
28	144372
29	164144
30	185200
31	209192
32	234928
33	262706
34	293244
35	326002
36	361240
37	400170
38	441516

[16, 56, 142, 296, 544, 892, 1436, 2136, 3066, 4272, 5840, 7688, 10094, 12884, 16182, 20192, 24918, 30200, 36614, 43692, 51756, 61008, 71544, 83040, 96202, 110692, 126702, 144372, 164144, 185200, 209192, 234928, 262706, 293244, 326002, 361240, 400170, 441516]

cp's OEIS Frontend

A331766 Number of regions formed by drawing the lines connecting any two of the 2*(n+2) perimeter points of a 3 X (n+1) rectangular grid of points (or equally, a 2 X n grid of squares).

Table of values

List of values