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.

A002940 Arrays of dumbbells.

Table of values

n a(n)
1 1
2 4
3 11
4 26
5 56
6 114
7 223
8 424
9 789
10 1444
11 2608
12 4660
13 8253
14 14508
15 25343
16 44030
17 76136
18 131110
19 224955
20 384720
21 656041
22 1115784
23 1893216
24 3205416
25 5416441
26 9136084
27 15384563
28 25866914
29 43429784
30 72821274
31 121953943
32 204002680
33 340886973
34 569047468
35 949022608

List of values

[1, 4, 11, 26, 56, 114, 223, 424, 789, 1444, 2608, 4660, 8253, 14508, 25343, 44030, 76136, 131110, 224955, 384720, 656041, 1115784, 1893216, 3205416, 5416441, 9136084, 15384563, 25866914, 43429784, 72821274, 121953943, 204002680, 340886973, 569047468, 949022608]