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.

A080211 a(n) = binomial(n, smallest prime factor of n).

Table of values

n a(n)
1 1
2 1
3 1
4 6
5 1
6 15
7 1
8 28
9 84
10 45
11 1
12 66
13 1
14 91
15 455
16 120
17 1
18 153
19 1
20 190
21 1330
22 231
23 1
24 276
25 53130
26 325
27 2925
28 378
29 1
30 435
31 1
32 496
33 5456
34 561
35 324632
36 630
37 1
38 703
39 9139
40 780
41 1
42 861
43 1
44 946
45 14190
46 1035
47 1
48 1128
49 85900584
50 1225
51 20825
52 1326
53 1
54 1431
55 3478761

List of values

[1, 1, 1, 6, 1, 15, 1, 28, 84, 45, 1, 66, 1, 91, 455, 120, 1, 153, 1, 190, 1330, 231, 1, 276, 53130, 325, 2925, 378, 1, 435, 1, 496, 5456, 561, 324632, 630, 1, 703, 9139, 780, 1, 861, 1, 946, 14190, 1035, 1, 1128, 85900584, 1225, 20825, 1326, 1, 1431, 3478761]