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.

A257389 Number of 3-generalized Motzkin paths of length n with no level steps H=(3,0) at odd level.

Table of values

n a(n)
0 1
1 0
2 1
3 1
4 2
5 2
6 6
7 6
8 17
9 21
10 54
11 74
12 183
13 272
14 644
15 1025
16 2342
17 3928
18 8734
19 15264
20 33227
21 59989
22 128484
23 238008
24 503563
25 952038
26 1995955
27 3835381
28 7987092
29 15548654
30 32223061
31 63388488
32 130918071
33 259724317
34 535168956
35 1069025128

List of values

[1, 0, 1, 1, 2, 2, 6, 6, 17, 21, 54, 74, 183, 272, 644, 1025, 2342, 3928, 8734, 15264, 33227, 59989, 128484, 238008, 503563, 952038, 1995955, 3835381, 7987092, 15548654, 32223061, 63388488, 130918071, 259724317, 535168956, 1069025128]