cp's OEIS Frontend

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.

A064861 Triangle of Sulanke numbers: T(n,k) = T(n,k-1) + a(n-1,k) for n+k even and a(n,k) = a(n,k-1) + 2*a(n-1,k) for n+k odd.

Table of values

n a(n)
0 1
1 1
2 2
3 1
4 3
5 2
6 1
7 5
8 8
9 4
10 1
11 6
12 13
13 12
14 4
15 1
16 8
17 25
18 38
19 28
20 8
21 1
22 9
23 33
24 63
25 66
26 36
27 8
28 1
29 11
30 51
31 129
32 192
33 168
34 80
35 16
36 1
37 12
38 62
39 180
40 321
41 360
42 248
43 96
44 16
45 1
46 14
47 86
48 304
49 681
50 1002
51 968
52 592
53 208
54 32
55 1
56 15
57 100
58 390
59 985
60 1683
61 1970
62 1560
63 800
64 240
65 32
66 1
67 17

List of values

[1, 1, 2, 1, 3, 2, 1, 5, 8, 4, 1, 6, 13, 12, 4, 1, 8, 25, 38, 28, 8, 1, 9, 33, 63, 66, 36, 8, 1, 11, 51, 129, 192, 168, 80, 16, 1, 12, 62, 180, 321, 360, 248, 96, 16, 1, 14, 86, 304, 681, 1002, 968, 592, 208, 32, 1, 15, 100, 390, 985, 1683, 1970, 1560, 800, 240, 32, 1, 17]