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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.

A337270 Number of regions formed at generation n when the Conant "warp and woof" construction is applied to the base and left side of an equilateral triangle.

Table of values

n a(n)
0 1
1 2
2 3
3 5
4 7
5 13
6 20
7 36
8 57
9 108
10 185
11 355
12 637
13 1246
14 2344
15 4595
16 8895
17 17532
18 34592
19 68287
20 136053
21 269046
22 539516
23 1068111
24 2147477
25 4254870
26 8567392
27 16982215
28 34213477
29 67850054
30 136710948
31 271162515
32 546323617
33 1083843471

List of values

[1, 2, 3, 5, 7, 13, 20, 36, 57, 108, 185, 355, 637, 1246, 2344, 4595, 8895, 17532, 34592, 68287, 136053, 269046, 539516, 1068111, 2147477, 4254870, 8567392, 16982215, 34213477, 67850054, 136710948, 271162515, 546323617, 1083843471]

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

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