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.

A074378 Even triangular numbers halved.

Table of values

n a(n)
0 0
1 3
2 5
3 14
4 18
5 33
6 39
7 60
8 68
9 95
10 105
11 138
12 150
13 189
14 203
15 248
16 264
17 315
18 333
19 390
20 410
21 473
22 495
23 564
24 588
25 663
26 689
27 770
28 798
29 885
30 915
31 1008
32 1040
33 1139
34 1173
35 1278
36 1314
37 1425
38 1463
39 1580
40 1620
41 1743
42 1785
43 1914
44 1958
45 2093
46 2139
47 2280
48 2328
49 2475

List of values

[0, 3, 5, 14, 18, 33, 39, 60, 68, 95, 105, 138, 150, 189, 203, 248, 264, 315, 333, 390, 410, 473, 495, 564, 588, 663, 689, 770, 798, 885, 915, 1008, 1040, 1139, 1173, 1278, 1314, 1425, 1463, 1580, 1620, 1743, 1785, 1914, 1958, 2093, 2139, 2280, 2328, 2475]

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

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