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A000108 as a simple table

n a(n)
0 1
1 1
2 2
3 5
4 14
5 42
6 132
7 429
8 1430
9 4862
10 16796
11 58786
12 208012
13 742900
14 2674440
15 9694845
16 35357670
17 129644790
18 477638700
19 1767263190
20 6564120420
21 24466267020
22 91482563640
23 343059613650
24 1289904147324
25 4861946401452
26 18367353072152
27 69533550916004
28 263747951750360
29 1002242216651368
30 3814986502092304

[1,1,2,5,14,42,132,429,1430,4862,16796,58786,
 208012,742900,2674440,9694845,35357670,129644790,
 477638700,1767263190,6564120420,24466267020,
 91482563640,343059613650,1289904147324,
 4861946401452,18367353072152,69533550916004,
 263747951750360,1002242216651368,3814986502092304]

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Last modified June 28 04:43 EDT 2017. Contains 288813 sequences.