A193397 - cp's OEIS frontend

A193397 Wiener index of a benzenoid consisting of a double-step spiral chain of n hexagons (n>=2, s=21; see the Gutman et al. reference).

n	a(n)
2	109
3	271
4	553
5	955
6	1541
7	2279
8	3265
9	4435
10	5917
11	7615
12	9689
13	12011
14	14773
15	17815
16	21361
17	25219
18	29645
19	34415
20	39817
21	45595
22	52069
23	58951
24	66593
25	74675
26	83581
27	92959
28	103225
29	113995
30	125717
31	137975
32	151249
33	165091
34	180013
35	195535
36	212201
37	229499
38	248005
39	267175
40	287617

[109, 271, 553, 955, 1541, 2279, 3265, 4435, 5917, 7615, 9689, 12011, 14773, 17815, 21361, 25219, 29645, 34415, 39817, 45595, 52069, 58951, 66593, 74675, 83581, 92959, 103225, 113995, 125717, 137975, 151249, 165091, 180013, 195535, 212201, 229499, 248005, 267175, 287617]

cp's OEIS Frontend

A193397 Wiener index of a benzenoid consisting of a double-step spiral chain of n hexagons (n>=2, s=21; see the Gutman et al. reference).

Table of values

List of values