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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.

A087221 Number of compositions (ordered partitions) of n into powers of 4.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 3
6 4
7 5
8 7
9 10
10 14
11 19
12 26
13 36
14 50
15 69
16 96
17 133
18 184
19 254
20 352
21 488
22 676
23 935
24 1294
25 1792
26 2482
27 3436
28 4756
29 6584
30 9116
31 12621
32 17473
33 24190
34 33490
35 46365
36 64190
37 88868
38 123034
39 170334
40 235818
41 326478
42 451994
43 625764
44 866338
45 1199400
46 1660510

List of values

[1, 1, 1, 1, 2, 3, 4, 5, 7, 10, 14, 19, 26, 36, 50, 69, 96, 133, 184, 254, 352, 488, 676, 935, 1294, 1792, 2482, 3436, 4756, 6584, 9116, 12621, 17473, 24190, 33490, 46365, 64190, 88868, 123034, 170334, 235818, 326478, 451994, 625764, 866338, 1199400, 1660510]

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

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