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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.

A263458 Deal a pack of n cards into two piles and gather them up, n/2 times. All n such that this reverses the order of the deck.

Table of values

n a(n)
1 4
2 6
3 12
4 22
5 28
6 30
7 36
8 46
9 52
10 60
11 70
12 78
13 100
14 102
15 108
16 126
17 148
18 150
19 156
20 166
21 172
22 180
23 190
24 196
25 198
26 222
27 228
28 238
29 262
30 268
31 270
32 276
33 292
34 310
35 316
36 348
37 358
38 366
39 372
40 382
41 388
42 396
43 420
44 430
45 438
46 460
47 462
48 478
49 486
50 502
51 508
52 540
53 556
54 598

List of values

[4, 6, 12, 22, 28, 30, 36, 46, 52, 60, 70, 78, 100, 102, 108, 126, 148, 150, 156, 166, 172, 180, 190, 196, 198, 222, 228, 238, 262, 268, 270, 276, 292, 310, 316, 348, 358, 366, 372, 382, 388, 396, 420, 430, 438, 460, 462, 478, 486, 502, 508, 540, 556, 598]

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

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