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.

A380866 a(n) is the least m > 0 such that sigma(m) - 2m = A140863(n).

Table of values

n a(n)
1 18
2 196
3 100
4 36
5 15376
6 162
7 1352
8 72
9 968
10 200
11 392
12 13456
13 144
14 8450
15 1032256
16 400
17 119072
18 324
19 8464
20 288
21 1936
22 5776
23 2704
24 4624
25 111392
26 450
27 800
28 1458
29 9604
30 2450
31 1568
32 882
33 2500
34 576
35 648
36 89888
37 3872
38 5408
39 1600
40 70688
41 2178
42 9248
43 11552
44 11025
45 59168
46 53792
47 3136
48 16928
49 1152
50 900
51 43808
52 26912
53 3042
54 30752

List of values

[18, 196, 100, 36, 15376, 162, 1352, 72, 968, 200, 392, 13456, 144, 8450, 1032256, 400, 119072, 324, 8464, 288, 1936, 5776, 2704, 4624, 111392, 450, 800, 1458, 9604, 2450, 1568, 882, 2500, 576, 648, 89888, 3872, 5408, 1600, 70688, 2178, 9248, 11552, 11025, 59168, 53792, 3136, 16928, 1152, 900, 43808, 26912, 3042, 30752]