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.

A102581 Numbers n such that denominator of Sum_{k=0 to 2n+1} 1/k! is (2n+1)!/2.

Table of values

n a(n)
1 1
2 2
3 6
4 10
5 30
6 32
7 42
8 46
9 56
10 62
11 70
12 80
13 82
14 96
15 120
16 122
17 136
18 150
19 160
20 162
21 170
22 172
23 176
24 186
25 192
26 196
27 200
28 210
29 222
30 230
31 236
32 252
33 262
34 266
35 276
36 290
37 292
38 300
39 302
40 306
41 312
42 326
43 356
44 366
45 380
46 382
47 400
48 416
49 422
50 426
51 452
52 460
53 486
54 490
55 496
56 500

List of values

[1, 2, 6, 10, 30, 32, 42, 46, 56, 62, 70, 80, 82, 96, 120, 122, 136, 150, 160, 162, 170, 172, 176, 186, 192, 196, 200, 210, 222, 230, 236, 252, 262, 266, 276, 290, 292, 300, 302, 306, 312, 326, 356, 366, 380, 382, 400, 416, 422, 426, 452, 460, 486, 490, 496, 500]