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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.

A336785 Consider the rectangular regions in the Even Conant Lattice; let S(0) be the singleton with the square at the origin, and for any n >= 0, let S(n+1) be the set of rectangular regions adjacent to some region in S(n) that are not found in S(0) U ... U S(n); a(n) is the number of regions in S(n).

Table of values

n a(n)
0 1
1 2
2 3
3 4
4 8
5 7
6 10
7 15
8 13
9 18
10 18
11 29
12 22
13 31
14 29
15 35
16 36
17 42
18 53
19 52
20 55
21 68
22 82
23 66
24 87
25 80
26 87
27 116
28 124
29 104
30 124
31 100
32 132
33 142
34 160
35 166
36 161
37 190
38 173
39 182
40 237
41 244
42 289
43 312
44 331
45 265
46 259
47 269
48 265
49 330
50 386
51 495
52 565
53 542
54 449
55 381
56 436
57 465
58 486

List of values

[1, 2, 3, 4, 8, 7, 10, 15, 13, 18, 18, 29, 22, 31, 29, 35, 36, 42, 53, 52, 55, 68, 82, 66, 87, 80, 87, 116, 124, 104, 124, 100, 132, 142, 160, 166, 161, 190, 173, 182, 237, 244, 289, 312, 331, 265, 259, 269, 265, 330, 386, 495, 565, 542, 449, 381, 436, 465, 486]

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

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