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.

A256220 Number of times that the numerator of a sum generated from the set 1, 1/2, 1/3,..., 1/n is a Fibonacci number.

Table of values

n a(n)
1 1
2 3
3 5
4 9
5 11
6 22
7 28
8 37
9 45
10 62
11 70
12 125
13 133
14 172
15 330
16 421
17 450
18 840
19 901
20 1710
21 2356
22 2724
23 2824
24 5367
25 6022
26 7142
27 8072
28 18771
29 19204
30 35739
31 36453
32 42853
33 82094
34 88574
35 155642
36 264869

List of values

[1, 3, 5, 9, 11, 22, 28, 37, 45, 62, 70, 125, 133, 172, 330, 421, 450, 840, 901, 1710, 2356, 2724, 2824, 5367, 6022, 7142, 8072, 18771, 19204, 35739, 36453, 42853, 82094, 88574, 155642, 264869]