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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.

A230447 T(n, k) = T(n-1, k) + T(n-1, k-1) + A230135(n, k) with T(n, 0) = A008619(n) and T(n, n) = A080239(n+1), n >= 0 and 0 <= k <= n.

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 2
5 2
6 2
7 4
8 5
9 3
10 3
11 6
12 9
13 8
14 6
15 3
16 9
17 16
18 17
19 14
20 9
21 4
22 12
23 25
24 33
25 32
26 23
27 15
28 4
29 16
30 38
31 58
32 65
33 55
34 39
35 24
36 5
37 20
38 54
39 96
40 124
41 120
42 94
43 63
44 40
45 5
46 25
47 75
48 150
49 220
50 244
51 215
52 157
53 103
54 64
55 6
56 30
57 100
58 225
59 371
60 464
61 459
62 372
63 261
64 167
65 104

List of values

[1, 1, 1, 2, 2, 2, 2, 4, 5, 3, 3, 6, 9, 8, 6, 3, 9, 16, 17, 14, 9, 4, 12, 25, 33, 32, 23, 15, 4, 16, 38, 58, 65, 55, 39, 24, 5, 20, 54, 96, 124, 120, 94, 63, 40, 5, 25, 75, 150, 220, 244, 215, 157, 103, 64, 6, 30, 100, 225, 371, 464, 459, 372, 261, 167, 104]

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

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