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.

A081283 An interleaved sequence of pyramidal and polygonal numbers.

Table of values

n a(n)
0 0
1 1
2 1
3 5
4 6
5 16
6 20
7 40
8 50
9 85
10 105
11 161
12 196
13 280
14 336
15 456
16 540
17 705
18 825
19 1045
20 1210
21 1496
22 1716
23 2080
24 2366
25 2821
26 3185
27 3745
28 4200
29 4880
30 5440
31 6256
32 6936
33 7905
34 8721
35 9861
36 10830
37 12160
38 13300
39 14840
40 16170
41 17941
42 19481
43 21505
44 23276
45 25576
46 27600

List of values

[0, 1, 1, 5, 6, 16, 20, 40, 50, 85, 105, 161, 196, 280, 336, 456, 540, 705, 825, 1045, 1210, 1496, 1716, 2080, 2366, 2821, 3185, 3745, 4200, 4880, 5440, 6256, 6936, 7905, 8721, 9861, 10830, 12160, 13300, 14840, 16170, 17941, 19481, 21505, 23276, 25576, 27600]