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.

A134426 Triangle read by rows: T(n,k) is the number of paths of length n in the first quadrant, starting at the origin, ending at height k and consisting of 2 kind of upsteps U=(1,1) (U1 and U2), 3 kind of flatsteps F=(1,0) (F1, F2 and F3) and 1 kind of downsteps D=(1,-1).

Table of values

n a(n)
0 1
1 3
2 2
3 11
4 12
5 4
6 45
7 62
8 36
9 8
10 197
11 312
12 240
13 96
14 16
15 903
16 1570
17 1440
18 784
19 240
20 32
21 4279
22 7956
23 8244
24 5472
25 2320
26 576
27 64
28 20793
29 40670
30 46116
31 35224
32 18480
33 6432
34 1344
35 128
36 103049
37 209712
38 254912
39 216384
40 132320
41 57600
42 17024
43 3072
44 256

List of values

[1, 3, 2, 11, 12, 4, 45, 62, 36, 8, 197, 312, 240, 96, 16, 903, 1570, 1440, 784, 240, 32, 4279, 7956, 8244, 5472, 2320, 576, 64, 20793, 40670, 46116, 35224, 18480, 6432, 1344, 128, 103049, 209712, 254912, 216384, 132320, 57600, 17024, 3072, 256]