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.

A343155 Irregular triangle T read by rows: T(n, k) is the sum of the consecutive integers placed along the k-th turn of the spiral of the n X n matrix defined in A126224.

Table of values

n a(n)
1 1
2 10
3 36
4 9
5 78
6 58
7 136
8 164
9 25
10 210
11 318
12 138
13 300
14 520
15 356
16 49
17 406
18 770
19 654
20 250
21 528
22 1068
23 1032
24 612
25 81
26 666
27 1414
28 1490
29 1086
30 394
31 820
32 1808
33 2028
34 1672
35 932
36 121
37 990
38 2250
39 2646
40 2370
41 1614
42 570
43 1176
44 2740
45 3344
46 3180
47 2440
48 1316
49 169
50 1378
51 3278
52 4122
53 4102
54 3410
55 2238
56 778

List of values

[1, 10, 36, 9, 78, 58, 136, 164, 25, 210, 318, 138, 300, 520, 356, 49, 406, 770, 654, 250, 528, 1068, 1032, 612, 81, 666, 1414, 1490, 1086, 394, 820, 1808, 2028, 1672, 932, 121, 990, 2250, 2646, 2370, 1614, 570, 1176, 2740, 3344, 3180, 2440, 1316, 169, 1378, 3278, 4122, 4102, 3410, 2238, 778]