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.

A274830 Numbers k such that 7*k+1 is a triangular number (A000217).

Table of values

n a(n)
1 0
2 2
3 5
4 11
5 17
6 27
7 36
8 50
9 62
10 80
11 95
12 117
13 135
14 161
15 182
16 212
17 236
18 270
19 297
20 335
21 365
22 407
23 440
24 486
25 522
26 572
27 611
28 665
29 707
30 765
31 810
32 872
33 920
34 986
35 1037
36 1107
37 1161
38 1235
39 1292
40 1370
41 1430
42 1512
43 1575
44 1661
45 1727
46 1817
47 1886
48 1980
49 2052
50 2150
51 2225

List of values

[0, 2, 5, 11, 17, 27, 36, 50, 62, 80, 95, 117, 135, 161, 182, 212, 236, 270, 297, 335, 365, 407, 440, 486, 522, 572, 611, 665, 707, 765, 810, 872, 920, 986, 1037, 1107, 1161, 1235, 1292, 1370, 1430, 1512, 1575, 1661, 1727, 1817, 1886, 1980, 2052, 2150, 2225]

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

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