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.

A121478 Triangular numbers with three distinct prime factors.

Table of values

n a(n)
1 66
2 78
3 105
4 120
5 190
6 231
7 276
8 300
9 378
10 406
11 435
12 465
13 528
14 561
15 595
16 666
17 741
18 820
19 861
20 903
21 946
22 1035
23 1128
24 1176
25 1275
26 1378
27 1485
28 1653
29 1953
30 2016
31 2080
32 2211
33 2278
34 2485
35 2556
36 2628
37 2775
38 3081
39 3160
40 3240
41 3655
42 3741
43 3916
44 4005
45 4371
46 4465

List of values

[66, 78, 105, 120, 190, 231, 276, 300, 378, 406, 435, 465, 528, 561, 595, 666, 741, 820, 861, 903, 946, 1035, 1128, 1176, 1275, 1378, 1485, 1653, 1953, 2016, 2080, 2211, 2278, 2485, 2556, 2628, 2775, 3081, 3160, 3240, 3655, 3741, 3916, 4005, 4371, 4465]

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

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