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.

A331820 Positive numbers k such that k and k + 1 are both negabinary-Niven numbers (A331728).

Table of values

n a(n)
1 1
2 2
3 3
4 8
5 14
6 15
7 20
8 32
9 35
10 56
11 62
12 63
13 68
14 80
15 90
16 95
17 124
18 125
19 128
20 174
21 184
22 185
23 215
24 224
25 244
26 245
27 248
28 254
29 255
30 260
31 272
32 275
33 300
34 304
35 305
36 320
37 335
38 342
39 468
40 469
41 484
42 485
43 512
44 515
45 544
46 545
47 552
48 575
49 594
50 636
51 720
52 762
53 784
54 785
55 804
56 846
57 896

List of values

[1, 2, 3, 8, 14, 15, 20, 32, 35, 56, 62, 63, 68, 80, 90, 95, 124, 125, 128, 174, 184, 185, 215, 224, 244, 245, 248, 254, 255, 260, 272, 275, 300, 304, 305, 320, 335, 342, 468, 469, 484, 485, 512, 515, 544, 545, 552, 575, 594, 636, 720, 762, 784, 785, 804, 846, 896]

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

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