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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.

A057827 a(0) = 1; a(n) = LCM(n, sum{k=0 to n-1}[a(k)]).

Table of values

n a(n)
0 1
1 1
2 2
3 12
4 16
5 160
6 192
7 2688
8 3072
9 18432
10 122880
11 1622016
12 1769472
13 46006272
14 49545216
15 495452160
16 594542592
17 20214448128
18 21403533312
19 813334265856
20 856141332480
21 1712282664960
22 37670218629120
23 945180031057920

List of values

[1, 1, 2, 12, 16, 160, 192, 2688, 3072, 18432, 122880, 1622016, 1769472, 46006272, 49545216, 495452160, 594542592, 20214448128, 21403533312, 813334265856, 856141332480, 1712282664960, 37670218629120, 945180031057920]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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