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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.

A357940 a(n) = Sum_{k=0..floor(n/3)} Stirling2(k,n - 3*k).

Table of values

n a(n)
0 1
1 0
2 0
3 0
4 1
5 0
6 0
7 1
8 1
9 0
10 1
11 3
12 1
13 1
14 7
15 6
16 2
17 15
18 25
19 11
20 32
21 90
22 66
23 78
24 302
25 351
26 267
27 987
28 1703
29 1305
30 3291
31 7799
32 7463
33 11976
34 34568
35 43584
36 51329
37 151631
38 249527
39 266058
40 675490
41 1395375
42 1586432
43 3159982
44 7675720
45 10132557
46 16108875
47 41991096
48 66170977
49 91724556

List of values

[1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 1, 3, 1, 1, 7, 6, 2, 15, 25, 11, 32, 90, 66, 78, 302, 351, 267, 987, 1703, 1305, 3291, 7799, 7463, 11976, 34568, 43584, 51329, 151631, 249527, 266058, 675490, 1395375, 1586432, 3159982, 7675720, 10132557, 16108875, 41991096, 66170977, 91724556]

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

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