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.

A253547 Total number of star-shaped dodecagons appearing in a variant of hexagon expansion after n iterations.

Table of values

n a(n)
1 0
2 0
3 0
4 1
5 3
6 9
7 16
8 23
9 33
10 43
11 56
12 69
13 85
14 101
15 120
16 139
17 161
18 183
19 208
20 233
21 261
22 289
23 320
24 351
25 385
26 419
27 456
28 493
29 533
30 573
31 616
32 659
33 705
34 751
35 800
36 849
37 901
38 953
39 1008
40 1063
41 1121
42 1179
43 1240
44 1301
45 1365
46 1429
47 1496
48 1563
49 1633
50 1703
51 1776
52 1849
53 1925
54 2001
55 2080

List of values

[0, 0, 0, 1, 3, 9, 16, 23, 33, 43, 56, 69, 85, 101, 120, 139, 161, 183, 208, 233, 261, 289, 320, 351, 385, 419, 456, 493, 533, 573, 616, 659, 705, 751, 800, 849, 901, 953, 1008, 1063, 1121, 1179, 1240, 1301, 1365, 1429, 1496, 1563, 1633, 1703, 1776, 1849, 1925, 2001, 2080]