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.

A239580 Numbers k such that A227364(k) = 1 + 2*3 + 4*5*6 + 7*8*9*10 + ... + ...*k is a prime.

Table of values

n a(n)
1 2
2 3
3 4
4 6
5 9
6 10
7 13
8 14
9 15
10 18
11 30
12 32
13 54
14 58
15 59
16 81
17 85
18 128
19 140
20 203
21 204
22 206
23 209
24 223
25 286
26 305
27 343
28 350
29 367
30 397
31 399
32 451
33 453
34 506
35 534
36 656
37 676
38 698
39 730
40 756
41 845
42 849
43 878
44 944
45 1020
46 1040
47 1091
48 1248
49 1256
50 1300
51 1310
52 1326
53 1364
54 1406
55 1535

List of values

[2, 3, 4, 6, 9, 10, 13, 14, 15, 18, 30, 32, 54, 58, 59, 81, 85, 128, 140, 203, 204, 206, 209, 223, 286, 305, 343, 350, 367, 397, 399, 451, 453, 506, 534, 656, 676, 698, 730, 756, 845, 849, 878, 944, 1020, 1040, 1091, 1248, 1256, 1300, 1310, 1326, 1364, 1406, 1535]

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

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