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.

A107705 a(n) is the least number of prime factors in any non-deficient number that has the n-th prime as its least prime factor.

Table of values

n a(n)
1 2
2 5
3 9
4 18
5 31
6 46
7 67
8 91
9 122
10 158
11 194
12 238
13 284
14 334
15 392
16 456
17 522
18 591
19 668
20 749
21 835
22 929
23 1028
24 1133
25 1242
26 1352
27 1469
28 1594
29 1727
30 1869
31 2019
32 2163
33 2315
34 2471
35 2636
36 2802
37 2977
38 3157
39 3342
40 3534
41 3731
42 3933
43 4145
44 4358
45 4581
46 4811
47 5053
48 5293

List of values

[2, 5, 9, 18, 31, 46, 67, 91, 122, 158, 194, 238, 284, 334, 392, 456, 522, 591, 668, 749, 835, 929, 1028, 1133, 1242, 1352, 1469, 1594, 1727, 1869, 2019, 2163, 2315, 2471, 2636, 2802, 2977, 3157, 3342, 3534, 3731, 3933, 4145, 4358, 4581, 4811, 5053, 5293]