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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.

A342763 Fold a square sheet of paper alternately vertically to the left and horizontally downwards; after each fold, draw a line along each inward crease; after n folds, the resulting graph has a(n) regions with minimal area.

Table of values

n a(n)
0 1
1 2
2 2
3 2
4 3
5 6
6 10
7 15
8 27
9 45
10 85
11 153
12 297
13 561
14 1105
15 2145
16 4257
17 8385
18 16705
19 33153
20 66177
21 131841
22 263425
23 525825
24 1051137
25 2100225
26 4199425
27 8394753
28 16787457
29 33566721
30 67129345
31 134242305
32 268476417
33 536920065
34 1073823745
35 2147581953
36 4295131137

List of values

[1, 2, 2, 2, 3, 6, 10, 15, 27, 45, 85, 153, 297, 561, 1105, 2145, 4257, 8385, 16705, 33153, 66177, 131841, 263425, 525825, 1051137, 2100225, 4199425, 8394753, 16787457, 33566721, 67129345, 134242305, 268476417, 536920065, 1073823745, 2147581953, 4295131137]

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

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