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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.

A240523 a(n) = floor(4^n/((1+sqrt(5))/2)^(2*n)).

Table of values

n a(n)
0 1
1 1
2 2
3 3
4 5
5 8
6 12
7 19
8 29
9 45
10 69
11 105
12 161
13 247
14 377
15 577
16 881
17 1347
18 2058
19 3144
20 4805
21 7341
22 11216
23 17137
24 26183
25 40005
26 61122
27 93387
28 142682
29 218000
30 333074
31 508892
32 777518
33 1187942
34 1815014
35 2773095
36 4236913

List of values

[1, 1, 2, 3, 5, 8, 12, 19, 29, 45, 69, 105, 161, 247, 377, 577, 881, 1347, 2058, 3144, 4805, 7341, 11216, 17137, 26183, 40005, 61122, 93387, 142682, 218000, 333074, 508892, 777518, 1187942, 1815014, 2773095, 4236913]

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

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