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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.

A075059 a(n) = 1 + lcm(1, 2, ..., n) = 1 + A003418(n).

Table of values

n a(n)
0 2
1 2
2 3
3 7
4 13
5 61
6 61
7 421
8 841
9 2521
10 2521
11 27721
12 27721
13 360361
14 360361
15 360361
16 720721
17 12252241
18 12252241
19 232792561
20 232792561
21 232792561
22 232792561
23 5354228881
24 5354228881
25 26771144401
26 26771144401
27 80313433201
28 80313433201

List of values

[2, 2, 3, 7, 13, 61, 61, 421, 841, 2521, 2521, 27721, 27721, 360361, 360361, 360361, 720721, 12252241, 12252241, 232792561, 232792561, 232792561, 232792561, 5354228881, 5354228881, 26771144401, 26771144401, 80313433201, 80313433201]

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

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