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.

A372718 Triangular numbers that are 2 mod 4, halved.

Table of values

n a(n)
1 3
2 5
3 33
4 39
5 95
6 105
7 189
8 203
9 315
10 333
11 473
12 495
13 663
14 689
15 885
16 915
17 1139
18 1173
19 1425
20 1463
21 1743
22 1785
23 2093
24 2139
25 2475
26 2525
27 2889
28 2943
29 3335
30 3393
31 3813
32 3875
33 4323
34 4389
35 4865
36 4935
37 5439
38 5513
39 6045
40 6123
41 6683
42 6765
43 7353
44 7439
45 8055
46 8145
47 8789
48 8883
49 9555
50 9653

List of values

[3, 5, 33, 39, 95, 105, 189, 203, 315, 333, 473, 495, 663, 689, 885, 915, 1139, 1173, 1425, 1463, 1743, 1785, 2093, 2139, 2475, 2525, 2889, 2943, 3335, 3393, 3813, 3875, 4323, 4389, 4865, 4935, 5439, 5513, 6045, 6123, 6683, 6765, 7353, 7439, 8055, 8145, 8789, 8883, 9555, 9653]

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

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