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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.

A240733 a(n) = floor(6^n/(2+2*cos(Pi/9))^n).

Table of values

n a(n)
0 1
1 1
2 2
3 3
4 5
5 8
6 13
7 21
8 32
9 50
10 78
11 121
12 187
13 289
14 448
15 693
16 1072
17 1658
18 2564
19 3966
20 6134
21 9487
22 14673
23 22695
24 35101
25 54288
26 83964
27 129862
28 200850
29 310643
30 480452
31 743085
32 1149282
33 1777523
34 2749182
35 4251987
36 6576279
37 10171116
38 15731022
39 24330178
40 37629950

List of values

[1, 1, 2, 3, 5, 8, 13, 21, 32, 50, 78, 121, 187, 289, 448, 693, 1072, 1658, 2564, 3966, 6134, 9487, 14673, 22695, 35101, 54288, 83964, 129862, 200850, 310643, 480452, 743085, 1149282, 1777523, 2749182, 4251987, 6576279, 10171116, 15731022, 24330178, 37629950]

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

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