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.

A141481 Square spiral of sums of selected preceding terms, starting at 1.

Table of values

n a(n)
1 1
2 1
3 2
4 4
5 5
6 10
7 11
8 23
9 25
10 26
11 54
12 57
13 59
14 122
15 133
16 142
17 147
18 304
19 330
20 351
21 362
22 747
23 806
24 880
25 931
26 957
27 1968
28 2105
29 2275
30 2391
31 2450
32 5022
33 5336
34 5733
35 6155
36 6444
37 6591
38 13486
39 14267
40 15252
41 16295
42 17008
43 17370
44 35487
45 37402
46 39835
47 42452
48 45220

List of values

[1, 1, 2, 4, 5, 10, 11, 23, 25, 26, 54, 57, 59, 122, 133, 142, 147, 304, 330, 351, 362, 747, 806, 880, 931, 957, 1968, 2105, 2275, 2391, 2450, 5022, 5336, 5733, 6155, 6444, 6591, 13486, 14267, 15252, 16295, 17008, 17370, 35487, 37402, 39835, 42452, 45220]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.