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.

A064889 Denominators of partial sums of reciprocals of A051451 (A051451 includes lcm(1,...,x), x=power of prime from A000961 and also contains 1).

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 30
6 420
7 840
8 1260
9 9240
10 9009
11 240240
12 471240
13 232792560
14 535422888
15 26771144400
16 181704600
17 4822131600
18 36100888223400
19 3702655202400
20 76327592243760
21 737576396429600
22 362291852261631600
23 6416241209619040800

List of values

[1, 2, 3, 4, 30, 420, 840, 1260, 9240, 9009, 240240, 471240, 232792560, 535422888, 26771144400, 181704600, 4822131600, 36100888223400, 3702655202400, 76327592243760, 737576396429600, 362291852261631600, 6416241209619040800]

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

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