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.

A129091 a(0)=1; a(n) = gcd(a(n-1), n) + lcm(a(n-1), n).

Table of values

n a(n)
0 1
1 2
2 4
3 13
4 53
5 266
6 800
7 5601
8 44809
9 403282
10 2016412
11 22180533
12 88722135
13 1153387756
14 8073714294
15 40368571473
16 645897143569
17 10980251440674
18 32940754322028
19 625874332118533
20 12517486642370661
21 12517486642370682

List of values

[1, 2, 4, 13, 53, 266, 800, 5601, 44809, 403282, 2016412, 22180533, 88722135, 1153387756, 8073714294, 40368571473, 645897143569, 10980251440674, 32940754322028, 625874332118533, 12517486642370661, 12517486642370682]

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

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