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.

A081423 Subdiagonal of array of n-gonal numbers A081422.

Table of values

n a(n)
0 1
1 3
2 12
3 34
4 75
5 141
6 238
7 372
8 549
9 775
10 1056
11 1398
12 1807
13 2289
14 2850
15 3496
16 4233
17 5067
18 6004
19 7050
20 8211
21 9493
22 10902
23 12444
24 14125
25 15951
26 17928
27 20062
28 22359
29 24825
30 27466
31 30288
32 33297
33 36499
34 39900
35 43506
36 47323
37 51357
38 55614
39 60100

List of values

[1, 3, 12, 34, 75, 141, 238, 372, 549, 775, 1056, 1398, 1807, 2289, 2850, 3496, 4233, 5067, 6004, 7050, 8211, 9493, 10902, 12444, 14125, 15951, 17928, 20062, 22359, 24825, 27466, 30288, 33297, 36499, 39900, 43506, 47323, 51357, 55614, 60100]