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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.

A180046 a(n+1) = a(n-3) + a(n-2) - a(n-1) + a(n) starting with 1, 2, 3, 4.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 4
6 5
7 8
8 11
9 12
10 14
11 21
12 30
13 35
14 40
15 56
16 81
17 100
18 115
19 152
20 218
21 281
22 330
23 419
24 588
25 780
26 941
27 1168
28 1595
29 2148
30 2662
31 3277
32 4358
33 5891
34 7472
35 9216
36 11993
37 16140
38 20835
39 25904
40 33202
41 44273
42 57810
43 72643
44 92308
45 121748
46 159893
47 203096
48 257259

List of values

[1, 2, 3, 4, 4, 5, 8, 11, 12, 14, 21, 30, 35, 40, 56, 81, 100, 115, 152, 218, 281, 330, 419, 588, 780, 941, 1168, 1595, 2148, 2662, 3277, 4358, 5891, 7472, 9216, 11993, 16140, 20835, 25904, 33202, 44273, 57810, 72643, 92308, 121748, 159893, 203096, 257259]

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

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