# A148438 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 15
5 43
6 143
7 437
8 1417
9 4989
10 16662
11 57588
12 210213
13 738585
14 2655474
15 9938226
16 36093321
17 133318933
18 508179320
19 1889378414
20 7117855813
21 27515624661
22 104113056537
23 398189050433
24 1556540328859
25 5970705339763
26 23109973111658
27 91161048731052
28 353543822644935
29 1381772586075051
30 5491843697255583