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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.

A348290 a(n) = Sum_{k=0..floor(n/10)} binomial(n-5*k,5*k).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 1
10 2
11 7
12 22
13 57
14 127
15 253
16 463
17 793
18 1288
19 2003
20 3005
21 4380
22 6255
23 8855
24 12630
25 18508
26 28358
27 45783
28 77408
29 134883
30 237888
31 418513
32 727513
33 1243163
34 2083888
35 3426771
36 5535911
37 8808206
38 13850761
39 21615771
40 33638409
41 52455339
42 82332229
43 130506914
44 209273284

List of values

[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 7, 22, 57, 127, 253, 463, 793, 1288, 2003, 3005, 4380, 6255, 8855, 12630, 18508, 28358, 45783, 77408, 134883, 237888, 418513, 727513, 1243163, 2083888, 3426771, 5535911, 8808206, 13850761, 21615771, 33638409, 52455339, 82332229, 130506914, 209273284]

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

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