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.

A109193 Triangle read by rows: T(n,k) is number of Grand Motzkin paths of length n having k returns to the x-axis (i.e., d or u steps hitting the x-axis).

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 1
5 6
6 1
7 14
8 4
9 1
10 30
11 20
12 1
13 64
14 68
15 8
16 1
17 140
18 196
19 56
20 1
21 318
22 524
23 248
24 16
25 1
26 750
27 1356
28 888
29 144
30 1
31 1828
32 3476
33 2832
34 784
35 32
36 1
37 4576
38 8932
39 8448
40 3344
41 352
42 1
43 11700
44 23136
45 24248
46 12368
47 2272
48 64
49 1
50 30420
51 60528
52 68120
53 41808
54 11232
55 832
56 1

List of values

[1, 1, 1, 2, 1, 6, 1, 14, 4, 1, 30, 20, 1, 64, 68, 8, 1, 140, 196, 56, 1, 318, 524, 248, 16, 1, 750, 1356, 888, 144, 1, 1828, 3476, 2832, 784, 32, 1, 4576, 8932, 8448, 3344, 352, 1, 11700, 23136, 24248, 12368, 2272, 64, 1, 30420, 60528, 68120, 41808, 11232, 832, 1]