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.

A194803 Number of parts that are visible in one of the three views of the shell model of partitions version "Tree" with n shells.

Table of values

n a(n)
0 0
1 1
2 3
3 5
4 8
5 11
6 17
7 23
8 33
9 46
10 64
11 86
12 121
13 161
14 217
15 291
16 388
17 507
18 671
19 870
20 1131
21 1458
22 1872
23 2383
24 3042
25 3840
26 4841
27 6076
28 7605
29 9460
30 11765
31 14544
32 17950
33 22073
34 27077
35 33092
36 40395
37 49113
38 59611
39 72162
40 87185
41 105035
42 126366

List of values

[0, 1, 3, 5, 8, 11, 17, 23, 33, 46, 64, 86, 121, 161, 217, 291, 388, 507, 671, 870, 1131, 1458, 1872, 2383, 3042, 3840, 4841, 6076, 7605, 9460, 11765, 14544, 17950, 22073, 27077, 33092, 40395, 49113, 59611, 72162, 87185, 105035, 126366]

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

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