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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.

A183898 Number of nondecreasing arrangements of n+3 numbers in 0..3 with each number being the sum mod 4 of three others.

Table of values

n a(n)
1 5
2 14
3 38
4 70
5 111
6 162
7 224
8 298
9 385
10 486
11 602
12 734
13 883
14 1050
15 1236
16 1442
17 1669
18 1918
19 2190
20 2486
21 2807
22 3154
23 3528
24 3930
25 4361
26 4822
27 5314
28 5838
29 6395
30 6986
31 7612
32 8274
33 8973
34 9710
35 10486
36 11302
37 12159
38 13058
39 14000
40 14986
41 16017
42 17094
43 18218
44 19390

List of values

[5, 14, 38, 70, 111, 162, 224, 298, 385, 486, 602, 734, 883, 1050, 1236, 1442, 1669, 1918, 2190, 2486, 2807, 3154, 3528, 3930, 4361, 4822, 5314, 5838, 6395, 6986, 7612, 8274, 8973, 9710, 10486, 11302, 12159, 13058, 14000, 14986, 16017, 17094, 18218, 19390]

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

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