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.

A218329 Even 9-gonal (nonagonal) pyramidal numbers.

Table of values

n a(n)
1 10
2 34
3 80
4 266
5 420
6 624
7 1210
8 1606
9 2080
10 3290
11 4040
12 4896
13 6954
14 8170
15 9520
16 12650
17 14444
18 16400
19 20826
20 23310
21 25984
22 31930
23 35216
24 38720
25 46410
26 50610
27 55056
28 64714
29 69940
30 75440
31 87290
32 93654
33 100320
34 114586
35 122200
36 130144
37 147050
38 156026
39 165360

List of values

[10, 34, 80, 266, 420, 624, 1210, 1606, 2080, 3290, 4040, 4896, 6954, 8170, 9520, 12650, 14444, 16400, 20826, 23310, 25984, 31930, 35216, 38720, 46410, 50610, 55056, 64714, 69940, 75440, 87290, 93654, 100320, 114586, 122200, 130144, 147050, 156026, 165360]