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.

A038991 Number of sublattices of index n in generic 4-dimensional lattice.

Table of values

n a(n)
1 1
2 15
3 40
4 155
5 156
6 600
7 400
8 1395
9 1210
10 2340
11 1464
12 6200
13 2380
14 6000
15 6240
16 11811
17 5220
18 18150
19 7240
20 24180
21 16000
22 21960
23 12720
24 55800
25 20306
26 35700
27 33880
28 62000
29 25260
30 93600
31 30784
32 97155
33 58560
34 78300
35 62400
36 187550
37 52060
38 108600
39 95200
40 217620
41 70644
42 240000
43 81400

List of values

[1, 15, 40, 155, 156, 600, 400, 1395, 1210, 2340, 1464, 6200, 2380, 6000, 6240, 11811, 5220, 18150, 7240, 24180, 16000, 21960, 12720, 55800, 20306, 35700, 33880, 62000, 25260, 93600, 30784, 97155, 58560, 78300, 62400, 187550, 52060, 108600, 95200, 217620, 70644, 240000, 81400]