# A011964 (b-file synthesized from sequence entry)
1 0
2 3
3 5
4 18
5 38
6 100
7 198
8 445
9 829
10 1605
11 2851
12 5014
13 8361
14 13843
15 21907
16 34362
17 52327
18 78571
19 115434
20 167695