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.

A307572 Number of Motzkin meanders of length n with an odd number of humps.

Table of values

n a(n)
0 0
1 0
2 1
3 5
4 18
5 56
6 161
7 443
8 1196
9 3228
10 8823
11 24579
12 69810
13 201380
14 586843
15 1719081
16 5044584
17 14800352
18 43384747
19 127076015
20 372100654
21 1089864344
22 3194496987
23 9372984609
24 27532712140
25 80966582548
26 238342592353
27 702222958797
28 2070454005078
29 6108341367004

List of values

[0, 0, 1, 5, 18, 56, 161, 443, 1196, 3228, 8823, 24579, 69810, 201380, 586843, 1719081, 5044584, 14800352, 43384747, 127076015, 372100654, 1089864344, 3194496987, 9372984609, 27532712140, 80966582548, 238342592353, 702222958797, 2070454005078, 6108341367004]