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.

A193260 G.f.: x+x^2 = Sum_{n>=1} x^n * ((1+x+x^2)^n - x^(2*n)) / (1+x+x^2)^a(n).

Table of values

n a(n)
1 1
2 2
3 5
4 6
5 7
6 9
7 10
8 11
9 15
10 16
11 17
12 19
13 20
14 21
15 23
16 24
17 25
18 28
19 29
20 30
21 32
22 33
23 34
24 36
25 37
26 38
27 43
28 44
29 45
30 47
31 48
32 49
33 51
34 52
35 53
36 56
37 57
38 58
39 60
40 61
41 62
42 64
43 65
44 66
45 69
46 70
47 71
48 73
49 74
50 75
51 77
52 78
53 79
54 83
55 84
56 85
57 87
58 88
59 89
60 91
61 92
62 93
63 96
64 97
65 98
66 100
67 101
68 102
69 104
70 105
71 106
72 109
73 110
74 111
75 113
76 114
77 115
78 117
79 118
80 119
81 125
82 126
83 127
84 129
85 130
86 131
87 133
88 134
89 135

List of values

[1, 2, 5, 6, 7, 9, 10, 11, 15, 16, 17, 19, 20, 21, 23, 24, 25, 28, 29, 30, 32, 33, 34, 36, 37, 38, 43, 44, 45, 47, 48, 49, 51, 52, 53, 56, 57, 58, 60, 61, 62, 64, 65, 66, 69, 70, 71, 73, 74, 75, 77, 78, 79, 83, 84, 85, 87, 88, 89, 91, 92, 93, 96, 97, 98, 100, 101, 102, 104, 105, 106, 109, 110, 111, 113, 114, 115, 117, 118, 119, 125, 126, 127, 129, 130, 131, 133, 134, 135]