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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.

A172128 a(n) = floor(phi^n/n), where phi = golden ratio = (1+sqrt(5))/2.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 2
6 2
7 4
8 5
9 8
10 12
11 18
12 26
13 40
14 60
15 90
16 137
17 210
18 320
19 492
20 756
21 1165
22 1800
23 2786
24 4320
25 6710
26 10440
27 16266
28 25380
29 39650
30 62016
31 97108
32 152213
33 238824
34 375060
35 589521
36 927368
37 1459960
38 2300100
39 3626213
40 5720653
41 9030450
42 14263680
43 22542396
44 35645400

List of values

[1, 1, 1, 1, 2, 2, 4, 5, 8, 12, 18, 26, 40, 60, 90, 137, 210, 320, 492, 756, 1165, 1800, 2786, 4320, 6710, 10440, 16266, 25380, 39650, 62016, 97108, 152213, 238824, 375060, 589521, 927368, 1459960, 2300100, 3626213, 5720653, 9030450, 14263680, 22542396, 35645400]

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

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