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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.

A247297 Triangle read by rows: T(n,k) is the number of weighted lattice paths B(n) having k uudd strings.

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 8
5 17
6 36
7 1
8 80
9 2
10 180
11 5
12 410
13 13
14 946
15 32
16 2203
17 80
18 5173
19 199
20 1
21 12233
22 499
23 3
24 29108
25 1255
26 9
27 69643
28 3161
29 28
30 167437
31 7984
32 81
33 404311
34 20206
35 231
36 980125
37 51228
38 650
39 1
40 2384441
41 130090
42 1812
43 4
44 5819576
45 330835
46 5016
47 14

List of values

[1, 1, 2, 4, 8, 17, 36, 1, 80, 2, 180, 5, 410, 13, 946, 32, 2203, 80, 5173, 199, 1, 12233, 499, 3, 29108, 1255, 9, 69643, 3161, 28, 167437, 7984, 81, 404311, 20206, 231, 980125, 51228, 650, 1, 2384441, 130090, 1812, 4, 5819576, 330835, 5016, 14]