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.

A262174 Sierpiński arrowhead curve as a triangular array starting leftward from the top, read by rows.

Table of values

n a(n)
1 1
2 2
3 0
4 0
5 3
6 4
7 9
8 8
9 0
10 5
11 10
12 0
13 7
14 6
15 0
16 0
17 11
18 0
19 0
20 23
21 24
22 13
23 12
24 0
25 0
26 22
27 0
28 25
29 14
30 0
31 17
32 18
33 0
34 21
35 26
36 0
37 0
38 15
39 16
40 0
41 19
42 20
43 0
44 27
45 28
46 69
47 68
48 0
49 0
50 0
51 0
52 0
53 0
54 0
55 29
56 70
57 0
58 67
59 0
60 0
61 0
62 0
63 0
64 31
65 30
66 0
67 0
68 71
69 66
70 0
71 0
72 0
73 0
74 0
75 32
76 0
77 35
78 36

List of values

[1, 2, 0, 0, 3, 4, 9, 8, 0, 5, 10, 0, 7, 6, 0, 0, 11, 0, 0, 23, 24, 13, 12, 0, 0, 22, 0, 25, 14, 0, 17, 18, 0, 21, 26, 0, 0, 15, 16, 0, 19, 20, 0, 27, 28, 69, 68, 0, 0, 0, 0, 0, 0, 0, 29, 70, 0, 67, 0, 0, 0, 0, 0, 31, 30, 0, 0, 71, 66, 0, 0, 0, 0, 0, 32, 0, 35, 36]

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

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