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.

A347027 a(1) = 1; a(n) = a(n-1) + 2 * a(floor(n/2)).

Table of values

n a(n)
1 1
2 3
3 5
4 11
5 17
6 27
7 37
8 59
9 81
10 115
11 149
12 203
13 257
14 331
15 405
16 523
17 641
18 803
19 965
20 1195
21 1425
22 1723
23 2021
24 2427
25 2833
26 3347
27 3861
28 4523
29 5185
30 5995
31 6805
32 7851
33 8897
34 10179
35 11461
36 13067
37 14673
38 16603
39 18533
40 20923
41 23313
42 26163
43 29013
44 32459
45 35905
46 39947
47 43989

List of values

[1, 3, 5, 11, 17, 27, 37, 59, 81, 115, 149, 203, 257, 331, 405, 523, 641, 803, 965, 1195, 1425, 1723, 2021, 2427, 2833, 3347, 3861, 4523, 5185, 5995, 6805, 7851, 8897, 10179, 11461, 13067, 14673, 16603, 18533, 20923, 23313, 26163, 29013, 32459, 35905, 39947, 43989]