cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A143941 The Wiener index of a chain of n triangles (i.e., joined like VVV..VV; here V is a triangle!).

Table of values

n a(n)
1 3
2 14
3 37
4 76
5 135
6 218
7 329
8 472
9 651
10 870
11 1133
12 1444
13 1807
14 2226
15 2705
16 3248
17 3859
18 4542
19 5301
20 6140
21 7063
22 8074
23 9177
24 10376
25 11675
26 13078
27 14589
28 16212
29 17951
30 19810
31 21793
32 23904
33 26147
34 28526
35 31045
36 33708
37 36519
38 39482
39 42601
40 45880
41 49323
42 52934

List of values

[3, 14, 37, 76, 135, 218, 329, 472, 651, 870, 1133, 1444, 1807, 2226, 2705, 3248, 3859, 4542, 5301, 6140, 7063, 8074, 9177, 10376, 11675, 13078, 14589, 16212, 17951, 19810, 21793, 23904, 26147, 28526, 31045, 33708, 36519, 39482, 42601, 45880, 49323, 52934]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.