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.

A101224 Triangle, read by rows, where T(n,1) = n^2-n+1 for n>=1 and T(n,k) = (n-k+1)*floor( (T(n,k-1)-1)/(n-k+1) ) for 1 related to the Flavius sieve (A000960).

Table of values

n a(n)
1 1
2 3
3 2
4 7
5 6
6 5
7 13
8 12
9 10
10 9
11 21
12 20
13 18
14 16
15 15
16 31
17 30
18 28
19 27
20 26
21 25
22 43
23 42
24 40
25 36
26 33
27 32
28 31
29 57
30 56
31 54
32 50
33 48
34 45
35 44
36 43
37 73
38 72
39 70
40 66
41 65
42 64
43 63
44 62
45 61
46 91
47 90
48 88
49 84
50 78
51 75
52 72
53 69
54 68
55 67
56 111
57 110
58 108
59 104
60 98
61 96
62 95
63 92
64 90
65 88
66 87
67 133
68 132
69 130
70 126

List of values

[1, 3, 2, 7, 6, 5, 13, 12, 10, 9, 21, 20, 18, 16, 15, 31, 30, 28, 27, 26, 25, 43, 42, 40, 36, 33, 32, 31, 57, 56, 54, 50, 48, 45, 44, 43, 73, 72, 70, 66, 65, 64, 63, 62, 61, 91, 90, 88, 84, 78, 75, 72, 69, 68, 67, 111, 110, 108, 104, 98, 96, 95, 92, 90, 88, 87, 133, 132, 130, 126]