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.

A139591 A139275(n) followed by 18-gonal number A051870(n+1).

Table of values

n a(n)
0 0
1 1
2 9
3 18
4 34
5 51
6 75
7 100
8 132
9 165
10 205
11 246
12 294
13 343
14 399
15 456
16 520
17 585
18 657
19 730
20 810
21 891
22 979
23 1068
24 1164
25 1261
26 1365
27 1470
28 1582
29 1695
30 1815
31 1936
32 2064
33 2193
34 2329
35 2466
36 2610
37 2755
38 2907
39 3060
40 3220
41 3381
42 3549
43 3718
44 3894
45 4071
46 4255
47 4440
48 4632

List of values

[0, 1, 9, 18, 34, 51, 75, 100, 132, 165, 205, 246, 294, 343, 399, 456, 520, 585, 657, 730, 810, 891, 979, 1068, 1164, 1261, 1365, 1470, 1582, 1695, 1815, 1936, 2064, 2193, 2329, 2466, 2610, 2755, 2907, 3060, 3220, 3381, 3549, 3718, 3894, 4071, 4255, 4440, 4632]

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

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