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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.

A060945 Number of compositions (ordered partitions) of n into 1's, 2's and 4's.

Table of values

n a(n)
0 1
1 1
2 2
3 3
4 6
5 10
6 18
7 31
8 55
9 96
10 169
11 296
12 520
13 912
14 1601
15 2809
16 4930
17 8651
18 15182
19 26642
20 46754
21 82047
22 143983
23 252672
24 443409
25 778128
26 1365520
27 2396320
28 4205249
29 7379697
30 12950466
31 22726483
32 39882198
33 69988378
34 122821042
35 215535903
36 378239143
37 663763424
38 1164823609

List of values

[1, 1, 2, 3, 6, 10, 18, 31, 55, 96, 169, 296, 520, 912, 1601, 2809, 4930, 8651, 15182, 26642, 46754, 82047, 143983, 252672, 443409, 778128, 1365520, 2396320, 4205249, 7379697, 12950466, 22726483, 39882198, 69988378, 122821042, 215535903, 378239143, 663763424, 1164823609]

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

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