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.

A309705 a(n) = lcm(a(n-1), n) - gcd(a(n-1), n) where a(1) = 1.

Table of values

n a(n)
1 1
2 1
3 2
4 2
5 9
6 15
7 104
8 96
9 285
10 565
11 6214
12 37282
13 484665
14 6785309
15 101779634
16 814237070
17 13842030189
18 83052181131
19 1577991441488
20 7889957207436
21 55229700452049
22 1215053409945077
23 27946228428736770
24 111784913714947074
25 2794622842873676849
26 72660193914715598073

List of values

[1, 1, 2, 2, 9, 15, 104, 96, 285, 565, 6214, 37282, 484665, 6785309, 101779634, 814237070, 13842030189, 83052181131, 1577991441488, 7889957207436, 55229700452049, 1215053409945077, 27946228428736770, 111784913714947074, 2794622842873676849, 72660193914715598073]

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

Content is available under The OEIS End-User License Agreement.