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.

A309688 Sum of the odd parts appearing among the second largest parts of the partitions of n into 3 parts.

Table of values

n a(n)
0 0
1 0
2 0
3 1
4 1
5 1
6 1
7 4
8 7
9 10
10 10
11 15
12 20
13 25
14 30
15 42
16 49
17 56
18 63
19 79
20 95
21 111
22 120
23 140
24 160
25 180
26 200
27 233
28 257
29 281
30 305
31 344
32 383
33 422
34 450
35 495
36 540
37 585
38 630
39 694
40 745
41 796
42 847
43 919
44 991
45 1063
46 1120
47 1200
48 1280
49 1360
50 1440
51 1545
52 1633
53 1721
54 1809

List of values

[0, 0, 0, 1, 1, 1, 1, 4, 7, 10, 10, 15, 20, 25, 30, 42, 49, 56, 63, 79, 95, 111, 120, 140, 160, 180, 200, 233, 257, 281, 305, 344, 383, 422, 450, 495, 540, 585, 630, 694, 745, 796, 847, 919, 991, 1063, 1120, 1200, 1280, 1360, 1440, 1545, 1633, 1721, 1809]