# A148257 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 4
4 14
5 32
6 109
7 299
8 1072
9 3127
10 11729
11 35401
12 136309
13 431530
14 1666485
15 5448195
16 21434385
17 71080336
18 283731780
19 960318349
20 3844483980
21 13259899319
22 53468280540
23 186240380637
24 757851614915
25 2667114394835
26 10890737935550
27 38782998990644
28 158886595211683
29 570230245670217
30 2349035050215130